Class 9 Nso 5 Years EBook

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(2) Copyright © 2015 Science Olympiad Foundation. Printed with the permission of Science Olympiad Foundation. No part. of this publication may be reproduced, transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the copyright holder. Ownership of an ebook does not give the possessor the ebook copyright. All disputes subject to Delhi jurisdiction only.. Disclaimer : The information in this book is to give you the path to success but it does not guarantee 100% success as the strategy is completely dependent on its execution. And it is based on last years papers of NSO exam.. Published by : MTG Learning Media (P) Ltd. Corporate Office : Plot 99, 2nd Floor, Sector 44 Institutional Area, Gurgaon, Haryana. Phone : 0124 - 4951200 Web: mtg.in Email: [email protected] Regd. Office : 406, Taj Apt., Ring Road, Near Safdarjung Hospital, New Delhi-110029. Visit. www.mtg.in for buying books online..

(3) CLASS 9. Contents ªª 13th NSO 2010 ªª 14th NSO 2011 ªª 15th NSO 2012 - SET A ªª 15th NSO 2012 - SET B ªª 16th NSO 2013 - SET A ªª 16th NSO 2013 - SET B ªª 17th NSO 2014 - SET A ªª 17th NSO 2014 - SET B.

(4) MTG Work-Books / olympiad books CLASS 1. International Mathematics Olympiad. National Science Olympiad. International English Olympiad. MTG CSS Series. CLASS 2. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad. International English Olympiad. MTG CSS Series. International English Olympiad. MTG CSS Series. CLASS 3. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad.

(5) MTG Work-Books / olympiad books CLASS 4. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad. International English Olympiad. MTG CSS Series. International English Olympiad. MTG CSS Series. International English Olympiad. MTG CSS Series. CLASS 5. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad. CLASS 6. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad.

(6) MTG Work-Books / olympiad books CLASS 7. National Science Olympiad. International Mathematics Olympiad. National Cyber Olympiad. Science IQ Challenge. Math IQ Challenge. International English Olympiad. MTG CSS Series. Master Mental Ability in 30 Days. CLASS 8. International Mathematics Olympiad. National Science Olympiad. National Cyber Olympiad. International English Olympiad. MTG CSS Series. Math IQ Challenge. Science IQ Challenge. Psychology of Success. The Secrets of SUCCESS. Master Mental Ability in 30 Days.

(7) MTG Work-Books / olympiad books CLASS 9. International Mathematics Olympiad. Math IQ Challenge. National Science Olympiad. Science IQ Challenge. National Cyber Olympiad. Psychology of Success. The Secrets of SUCCESS. International English Olympiad. Master Mental Ability in 30 Days. CLASS 10. International Mathematics Olympiad. Math IQ Challenge. National Science Olympiad. Science IQ Challenge. National Cyber Olympiad. Psychology of Success. The Secrets of SUCCESS. International English Olympiad. Master Mental Ability in 30 Days.

(8) MTG Work-Books / olympiad books CLASS 11. International Mathematics Olympiad. Math IQ Challenge. Science IQ Challenge. National Science Olympiad. Psychology of Success. National Cyber Olympiad. The Secrets of SUCCESS. Master Mental Ability in 30 Days. CLASS 12. International Mathematics Olympiad. Math IQ Challenge. Science IQ Challenge. National Science Olympiad. Psychology of Success. National Cyber Olympiad. The Secrets of SUCCESS. Master Mental Ability in 30 Days.

(9) Class. 1 to 10.

(10) JEE (Main & Advanced) | AIPMT | BOARDS | OLYMPIAD | NTSE. FOUNDATION COURSE For Classes 7, 8, 9 & 10 Class 7. Class 8. Class 9. Class 10.

(11) Class 9 13th. Year 2010. Copyright©2015. Science Olympiad Foundation (SOF).

(12) CLASS 9 | 13th NSO - 2010. MENTAL ABILITY 1. . (A) –3 2. . (C) 3 . (B) 9 . (C) 11 . (C) 6. 7. . D . M . B . (D) None of these . L . A . Given that 4 n+1 = 256, find the value of n. (B) 3 . (C) 5 . (D) 63 . A cistern can be filled separately by two pipes in 12 and 16 minutes respectively. If both pipes are opened together, when will the cistern be filled ? (A) 8. 6. . C . (B) 6 cm . 2 cm 3 . (A) 2 5. . (D) 13 . In the given figure, ABCD is a parallelogram. DL ^ AB and DM ^ BC. If AB = 18 cm, BC = 12 cm and DM = 10 cm. Find DL. 1 (A) 6 cm 2 . 4. . (D) 0 . If the sum of four consecutive odd numbers is 40, the smallest number is _______ (A) 7 . 3. . 2 x - 3 3 x + 4 = . 2x + 3 x + 2 (B) 2 . Find the value of x if 2 +. 1 mins 7 . (B) 4. 6 mins 7 . (C) 6. æ 2 1 ö If x = (3 + 8), find the value of ç x + 2 ÷ . x ø è (A) 36 (B) 30 . 6 mins 7 . (C) 28 . (D) 4. 1 mins 2 . (D) 34 . In the given figure, AB || CD. Find the value of x. . B . D . (A) 110° (B) 120° . A . (C) 130° . 105° C x° 25 ° . (D) 140° . E . 8. . The mean of 8 numbers is 25. If 5 is subtracted from each number, what will be the new mean ? (A) 10 (B) 20 (C) 30 (D) 40 . 9. . In an examination, 96% of the candidates passed and 50 failed. How many candidates appeared in the examination? (A) 1240 . (B) 1250 . (C) 1260 . (D) 1270 . 10. In the given question, three classes are given. Out of the four figures that follow, you are to indicate which figure will best represent the relationship amongst the three classes. "Boys, Students, Athletes" (A) . (B) . (C) . (D) . 11. Thirty six vehicles are parked in a parking lot in a single row. After the first car, there is one scooter. After the second car, there are two scooters. After the third car, there are three scooters and so on. Then the number of scooters in the second half of the row, is ________ (A) 16 . (B) 14 . (C) 15 2 . Copyright©2015. Science Olympiad Foundation (SOF). (D) 13.

(13) CLASS 9 | 13th NSO - 2010. 12. Find the missing number in the given figure. (A) 10 (C) 12 . 9 7 . (B) 11 (D) 13 . ? 2 . 3 4 5 5 . 13. Count the number of triangles and squares in the given figure. (A) 21 triangles, 7 squares (B) 18 triangles, 8 squares (C) 20 triangles, 8 squares . (D) 22 triangles, 7 squares . 14. Find the next term in the series : BMO, EOQ, HQS, ? (A) KSU (B) LMN (C) SOV . (D) SOW . 15. How many L's are there which do not have R preceding them and also do not have T following them? Z Q S T L R M N Q N R T U V X R L T A S L T Q R S L T (A) 1 (B) 2 (C) 3 . (D) 4 . SCIENCE . Displacement . 16. Two straight lines drawn on the same displacement time graph make angles 45° and 60° as shown. The ratio of the two velocities is _________ Q (A) 3 :1 (B) 1 : 1 (C) 1 : 2 (D) . 3 : 2 . P . 45° . 60° . Time . 17. The accelerationtime graph of a body is shown below: a . t . Which of the following would probably show velocitytime graph for a body? v . (A) . v . v . v . (B) . (D) . (C) . t . t . t . t . 18. Two bodies of equal masses (m) moving with equal velocities (v) in opposite directions collide.  The resultant velocity of the combination is (A) v (B) 2v (C) –v (D) Zero . Time . Time . (D) Time . 20. Which of the following is not an effect of inertia? (A) A person in a bus tends to fall backwards, when it starts suddenly. (B) When a tree is shaken vigorously, some of its leaves fall down. (C) A gun recoils back, when a bullet is fired from it. (D) None of these. 3 . Copyright©2015. Science Olympiad Foundation (SOF). Distance . (C) . Distance . (B) . Distance . (A) . Distance . 19. Which of the following distancetime graphs does not represent a real situation? . Time .

(14) CLASS 9 | 13th NSO - 2010. 21. A car and a motor cycle are moving with the same momentum. When equal retarding forces are applied, the car comes to halt in t 1 seconds and the motor cycle in t 2 seconds.  If the mass of the car is five times more than the mass of the motor cycle, then ________ (A) t 1 = t 2 . (C) t1 =. (B) t 1 = 5t 2 . 1 t 2 5 . (D) t 1 = 25t 2 . 22. Read the given statements and choose the correct option. Statement 1 : Acceleration due to gravity at a place on earth remains constant for all objects. Statement 2 : Acceleration due to gravity doesn't depend on the mass of the object, but only on mass of earth. (A) Both statement 1 and statement 2 are true and statement 2 is correct explanation of statement 1. (B) Both statement 1 and statement 2 are true, but statement 2 is not correct explanation of statement 1. (C) Statement 1 is true but statement 2 is false. (D) Statement 1 is false but statement 2 is true. 23. Read the given statements and choose the correct option. Statement 1 : There can be displacement of an object even in the absence of any force acting on it. Statement 2 : An object in uniform motion in a straight line shows displacement even when the net force acting on it is zero. (A) Both statement 1 and statement 2 are true and statement 2 is correct explanation of statement 1. (B) Both statement 1 and statement 2 are true, but statement 2 is not correct explanation of statement 1. (C) Statement 1 is true but statement 2 is false. (D) Statement 1 is false but statement 2 is true. Direction : Read the passage carefully and answer question numbers 24 and 25. The relative density of a solid with respect to a liquid is 4/5 and relative density of the liquid with respect to water is 10/9. The buoyant force exerted by a liquid on a solid immersed in it is equal to the weight of the liquid displaced by the solid. 24. Specific gravity of solid with respect to water is (A) 18/25 . (B) 8/9 . (C) 0.56 . (D) 1.8 . 25. When 4 kg of this solid is immersed in water, the buoyant force experienced by it is (given g = 9.8 m s –2 ) (A) 4.5g . (B) 4g . (C) 5g . (D) 10g . r 26. Equal force F acts on isolated bodies X and Y as shown in figure. The mass of Y is three times that of X. The magnitude of the acceleration of X is _____ . (A) Three times that of Y (B) 1/3 that of Y . F . X . F . Y . (C) Nine times that of Y (D) 1/9 that of Y . 27. According to the chart, on which planet would a ball fall the fastest ? Planet Earth Jupiter Neptune Saturn (A) Jupiter (B) Saturn . Acceleration Due to Gravity . (C) Neptune (D) Earth . 10 . 26 . 14 . 12 . 28. Which of the following reactions cannot occur ? (A) Fe + CuSO 4 . FeSO 4 + Cu . (B) Zn + FeSO 4 . (C) Fe + ZnSO 4 . FeSO 4 + Zn . (D) Both (A) & (B) Material . 29. Which of the following are incorrectly matched ? (A) (i) & (ii) . (i) (ii) (iii) (iv) . (B) (i), (ii) & (iii) (C) (i), (iii) & (iv) (D) All of these. Thermoplastic Jute Cellulose Polythene . 4 . Copyright©2015. Science Olympiad Foundation (SOF). ZnSO 4 + Fe . Natural Source . P P P × P . Artificial Source × × P × .

(15) CLASS 9 | 13th NSO - 2010. 30. Match the following : Column I Column II 1. Paraffin wax (p) Domestic fuel 2. Petrol (q) Used for manufacturing steel 3. LPG (r) Candles 4. Coke (s) Aviation fuel (A) 1 – (p); 2 – (q); 3 – (r); 4 – (s) (B) 1 – (q); 2 – (p); 3 – (r); 4 – (s) (C) 1 – (s); 2 – (r); 3 – (p); 4 – (q) (D) 1 – (r); 2 – (s); 3 – (p); 4 – (q) 31. A spoon was kept in contact with ice cubes for some time. Later, the same spoon was held over the flame of a small candle. The figure shows the observation. What do you infer from the given figure? (A) Spoon is an inflammable substance. (B) Burning of candle is a spontaneous process. (C) CO 2 is a product of combustion. (D) Water vapour is a product of combustion. 32. Rahul performs an experiment. He cuts out equal sized squares from each of the three fabrics nylon, knitted wool and cotton and weighs them. He then places each fabric square into a beaker containing 500 ml of water. . Water . Nylon . Knitted wool Cotton . After 10 minutes Rahul removes the fabric squares from the water, weighs them and records his observations in a tabular form. Which of the observations made by him is incorrect ? (A) Nylon . Fabric . Mass before Mass after soaking (g) soaking (g) Nylon 30 43 Knitted wool 40 50 Cotton 35 70 . (B) Knitted wool (C) Cotton (D) None of these . 33. Study the table carefully and select the appropriate Conductor of Malleability Lustrous Sample options. electricity W X Y Z W (A) Potassium Sodium Graphite Aluminium X (B) Graphite Aluminium Sodium Potassium Y (C) Sodium Aluminium Potassium Graphite Z (D) Aluminium Sodium Graphite Potassium 34. A silicon chip used in an integrated circuit of a microcomputer has a mass of 5.68 mg. How many silicon atoms are present in this chip? (Atomic mass of Si = 28.08) (A) 6.02 × 10 23 . (B) 5.68 × 10 23 . (C) 1.22 × 10 20 . 35. When a high voltage of about 10000 volts is applied to a discharge tube having a perforated cathode and containing air at very low pressure of about 0.001 mm of mercury, a faint red glow is observed behind the cathode. What were the conclusions of this experiment ? i. Anode rays are positively charged. ii. Since these rays are formed at the anode, they are known as anode rays. iii. The experiment led to the discovery of electrons. iv. The experiment led to the discovery of protons. (A) i, ii and iii . (B) ii, iii and iv . Red glow . (D) 11.36 × 10 23 Air at very low pressure . Discharge tube . Positive rays Perforated cathode Anode To vacuum pump . High voltage generator . (C) i, ii and iv 5 . Copyright©2015. Science Olympiad Foundation (SOF). – . + . (D) i, iii and iv.

(16) CLASS 9 | 13th NSO - 2010. 36. The correct experimental setup for separating a substance by sublimation is Beaker Solid +W ater Burner . Test tube Solid . (A) . Burner (B) . China dish Solid . (C) . Cork . Cotton plug . China dish Solid . Burner (D) . 37. Identify the incorrect statement from the given definitions of solids, liquids and gases in terms of melting and boiling points. (A) A substance is said to be in solid state if under normal pressure, its melting point is above the room temperature. (B) A substance is said to be in liquid state if under normal pressure, its melting point is below the room temperature. (C) A substance is said to be in gaseous state if under normal pressure, its boiling point is below the room temperature. (D) A substance can exist in solid, liquid and gaseous state under normal pressure and room temperature. 38. Membrane biogenesis is associated with which of the following cell organelles ? . (A) . (B) . (C) . (D) Both (A) & (B) . 39. Several microorganisms cause diseases in plants and reduce their yield. Which of the following plant diseases is incorrectly matched with its causal microorganism ? (A) Citrus canker Bacteria . (B) Tobacco mosaic Virus . (C) Rust of wheat Fungi . (D) Yellow vein mosaic of bhindi Bacteria . 40. __________ was the first one to observe free living cells. The term cell was given by  ____________. Cell theory was proposed by __________ and ____________. All cells arise from preexisting cells was suggested by __________. Select the correct sequence of names to complete the above paragraph. (A) Robert Hooke, Virchow, Anton Von Leeuwenhoek, Schleiden, Schwann (B) Anton Von Leeuwenhoek, Robert Hooke, Schleiden, Schwann, Virchow (C) Robert Hooke, Virchow, Schleiden, Schwann, Anton Von Leeuwenhoek (D) Anton Von Leeuwenhoek, Virchow, Schleiden, Schwann, Robert Hooke 41. Which of the following diseases is not transmitted by the vector shown in the figure? (i) Malaria (ii) Yellow fever (iii) Typhoid (iv) Sleeping sickness . (v) Kalaazar . (A) (ii), (iii) & (iv) . (B) (i), (iii) & (v) . 42. A . (i) . (C) (i) & (ii) . (D) (iii), (iv) & (v) . is a nonliving, elongated cell with tapering ends. Its walls are highly thickened with . except at certain circular spots known as (iii) .   A one above the other end to end. (v) . (iv) is a cylindrical tubelike structure placed . is a nonliving, thick walled cell providing mechanical support. . Select the correct sequence of words to complete the above paragraph. (i) . (ii) . (ii) . (iii) . (iv) . (v) . (A) Vessel . Lignin . Stoma . Tracheid . Xylem fibre . (B) Tracheid . Suberin . Pits . Vessel . Parenchyma . (C) Vessel . Suberin . Stoma . Tracheid . Sclereid . (D) Tracheid . Lignin . Pits . Vessel . Xylem fibre 6 . Copyright©2015. Science Olympiad Foundation (SOF).

(17) CLASS 9 | 13th NSO - 2010. 43. Match the column I with column II and select the correct option from the codes given below. Column I Column II (a) Particulate matter (i) Chemical water pollutants (b) Oil spills (ii) Nondegradable soil pollutants (c) Detergents (iii) Degradable soil pollutants (d) Plastics (iv) Air pollutants (e) Domestic wastes (v) Physical water pollutants (A) a(iv), b(iii), c(i), d(ii), e(v) (B) a(iv), b(v), c(i), d(ii), e(iii) (C) a(i), b(ii), c(iii), d(iv), e(v) (D) a(i), b(ii), c(iii), d(v), e(iv) 44. Which of the following are threatened wild animals ? (i) Golden cat (ii) Pink hued duck (iii) Dinosaur (v) Passenger pigeon (vi) White tailed mongoose (viii)Marsh crocodile (A) (i), (ii), (iv) & (v) . (B) (v), (vi), (vii) & (viii) . (iv) Dodo (vii) Gharial . (C) (ii), (iv), (vi) & (vii) . (D) (i), (ii), (vii) & (viii) . Direction : Refer the given experiment and answer Q. nos. 45 & 46. Place a candle in a beaker or a widemouthed bottle and light it. Light an incense stick (agarbati) and take it to the mouth of the beaker as shown in figure. Note the way in which the smoke flows when the incense stick is (i) near the edge of the beaker, (ii) kept a little above the candle, and (iii) kept in other regions. 45. In which case, the direction of flow of smoke will be towards the candle first and then upwards ? (A) (i) (B) (ii) (C) (iii) (D) Both (i) & (iii) 46. What does the above experiment show ? (A) The direction of movement of hot and cold air. (B) Oxygen is present in the air and is necessary for burning. (C) The temperature of air inside the bottle is more than the temperature of open air. (D) The direction in which the maximum smoke is produced & pollutes the environment. 47. What does P, Q & R represent in the given figure of nitrogen cycle ? . Nitrogen in atmosphere Nitrogen fixation . Denitrification . (A) (B) (C) (D) . P Ammonia Ammonia Nitrites Nitrates . Q Nitrates Nitrites Nitrates Nitrites . R Nitrites Nitrates Ammonia Ammonia . R . Protoplasm (green plants) Protoplasm (animals) . Nitrification Q . Ammonofication . Nitrification P . 48. Which of the following is a bottom feeder ? (A) . (B) . (C) . 7 . Copyright©2015. Science Olympiad Foundation (SOF). (D).

(18) CLASS 9 | 13th NSO - 2010. 49. This implement is made of wood and is drawn by a pair of bulls or other animals. It contains a strong triangular iron strip called share. The main part of it is a long log of wood which is called a shaft. There is a handle at one end of the shaft. The other end is attached to a beam which is placed on the bulls' necks. Which implement are we talking about and for what purpose is it used ? (A) Plough Tilling the soil (B) Hoe Removing the weeds (C) Cultivator Sowing the seeds (D) Seed drill Tilling the soil 50. In honey bee the drones (males) are produced from (A) Unfertilized eggs . (B) Fertilized eggs . (C) Larvae from unfertilized eggs, which are fed on royal jelly (D) Larvae from unfertilized eggs, which are not cared by the workers at all SPACE FOR ROUGH WORK. 8 . Copyright©2015. Science Olympiad Foundation (SOF).

(19) Class 9 14th. Year 2011. Copyright©2015. Science Olympiad Foundation (SOF).

(20) 2. CLASS 9 | 14th NSO - 2011. MENTAL ABILITY 1.. Coach A is designing a new park that will have both a. baseball ground and a cricket ground. The baseball ground will have the same dimensions as the cricket ground. A diagram of the park with the placement of the cricket ground is shown.. The position of the baseball ground will be determined by the reflection of the image of the cricket ground about the line y = x. What are the coordinates of the reflected image of point C?. (A) (3, 9). (B) (9, –3). (C) (–9, 3). (D) (–3, –9). 2.. The equation shown below can be used to estimate a person's low-density lipoprotein cholesterol (LDL) level, where C is the total cholesterol level, H is the high-density lipoprotein cholesterol level, and T is the level of triglycerides. All measurements are in milligrams per decilitre of blood. LDL = C − H −. . T 5. Lipoprotein Analysis Results Total cholesterol (C). 230. High-density lipoprotein (H). 50. Triglycerides (T). 80. A person's lipoprotein analysis results are shown. . What is this person's LDL level ?. (A) 20. 3.. In the given figure, the ratio of AD to DC is 3 : 4. If the area of D ABC is 210 cm2 , what is the. (B) 100. (C) 164. (D) 180. difference between the areas of DABD and DBDC ?. (A) (B) (C) (D). 4.. In the given figure, l ||m and p || q. Find the value of x + y – 4z.. (A) 0. (B) 68°. (C) 34° . (D) 72°. 5.. Mrs. Riya put four expressions on the board and asked her. Expression 1. 4.6507 – 5.196. students to simplify them.. Expression 2. 45 − 9. Expression 3. –2 – 1. Expression 4. (–3)3. 6.. 120 cm2 90 cm2 30 cm2 60 cm2. p m. 34°. z. l. Which simplified expression has the least value ? (A) Expression 1 (B) Expression 2 (C) Expression 3 (D) Expression 4. q. x y. 78°. ∠ x and ∠ y are exterior angles of D ABC, at the points B and C respectively. Also ∠ B > ∠ C, then relation between ∠ x and ∠ y is _______.. (A) ∠ x > ∠ y. 7.. If 22 = 162 , then value of x is ____. (A) 2 (B) –1. x. (B) ∠ x = ∠ y. (C) ∠ x < ∠ y. (D) None of these. (C) 0. (D) 1. 3x. Copyright©2015. Science Olympiad Foundation (SOF).

(21) 3 8.. CLASS 9 | 14th NSO - 2011. Simi installed a 6-foot tall cylindrical storage tank to collect rainwater from the roof of her house. She used the rain water to water the lawn and garden during dry. Rainfall. Rise of Water Level. (in inches). in Storage Tank. spells. She recorded the rise in the water level in her storage tank after each of 3 rainstorms. Her results are shown in the table.. (in inches) 1.5. 24. 0.5. 8. 2.5. 40. Which is the best prediction of the rise of the water level,. in inches, in her tank after a storm produced 2.25 inches of rain ? (A) 16 inches (B) 28 inches (C) 32 inches. 9.. Eleven students A, B, C, D, E, F, G, H, I, J and K are sitting in the first line facing the teacher.. (D) 36 inches. D who is just to the left of F, is to the right of C at second place. A is second to the right of E who is at one end. J is the nearest neighbour of A and B and is to the left of G at third place. H is next to D to the right and is at the third place to the right of I.. Who is just in the middle? (A) I (B) B. (C) J. (D) G. 10. A new museum has two circular display rooms. The radius of the large circular room is 6 yards. The radius of the smaller circular room is 3 yards. What is the area of the smaller room in relation. to the area of the large room ? (A) 1/6 of the large room's area (C) 1/3 of the large room's area . (B) 1/4 of the large room's area (D) 1/2 of the large room's area. 11. A magazine for people over 50 years of age asked its readers what type. Tourist Attractions. of tourist attraction interested them the most. If 250 readers responded, how many chose museums as their favourite attraction ?. (A) 32 . (B) 45. (C) 80. (D) 170. Historical Places 25%. 12. Two different positions of a dice are shown. Which number. 4. will appear on the face opposite to the face with number 4 ?. (A) (B) (C) (D). 6. 2 1 5 6. 13. If RAB = 36 and MEC = 195, then REG = _____.. (A) 240 (B) 160. (C) 40. Outlet Malls 18%. Museums. Parks 25%. 2. 4 5. 3. (D) 630. 14. Find the missing number in the given series below.. (A) 101. 11, 10, (?), 100, 1001, 1000, 10001 (B) 110 (C) 111. (D) 1101. 15. There are 23 steps to reach a temple. On descending from the temple Ram takes two steps, at a time, even as Shyam ascends one step. If they start simultaneously, at which step will they meet. each other ? (A) 9th. (B) 8th. (C) 11th. Copyright©2015. Science Olympiad Foundation (SOF). (D) 10th.

(22) 4. CLASS 9 | 14th NSO - 2011. science 16. A pupil uses a ticker-timer to investigate the movement of a trolley.. Every second, the ticker-timer puts 60 dots on the piece of tape.. What length of time corresponds to the distance between X and Y on the tape? (A) 0.10 s (B) 0.11 s (C) 0.17 s (D) 0.18 s. 17. A sonic 'tape measure' is used to measure the length of a room. It measures a time interval of 0.06 s between transmitting a sound pulse and receiving the echo. The speed of sound in air is. 330 m/s. How far is the reflecting wall from the tape measure? (A) 5.5 m (B) 9.9 m (C) 11 m. (D) 20 m. 18. A person exerts a horizontal force of 500 N on a box, which also experiences a frictional force of 100 N.. How much work is done against friction when the box moves a horizontal distance of 3 m? (A) 300 J (B) 1200 J (C) 1500 J (D) 1800 J. 19. Thermometer X at 20°C is placed in some water at 50°C in beaker Y.. After some time, thermometer X will show a maximum temperature. of _____. (A) 20°C (B) 35°C (C) 50°C (D) 30°C. 20.. The (A) (B) (C) (D). experiment given below shows that light ____. Can be reflected. Is a form of energy Travels in straight line Can pass through all objects. 21. Two rubber balls of the same size are both dropped on the Earth and on the Moon.. One ball is solid, and one is hollow. The approximate gravitational field strength on the Earth is 10 N/kg and on the moon is 1.7 N/kg.. Which ball has the greatest force acting on it?. Type of ball Where dropped. (A) Hollow On the Earth. (B) Hollow On the Moon. (C) Solid On the Earth. (D) Solid On the Moon 22. A sledge of mass 25 kg is pulled across level ground with a horizontal force of 60 N. The constant. force of friction is 20 N. What is the acceleration of the sledge? (B) 1.6 m/s2 (C) 2.4 m/s2 (A) 0.63 m/s2. Copyright©2015. Science Olympiad Foundation (SOF). (D) 3.2 m/s2.

(23) 5. CLASS 9 | 14th NSO - 2011. 23. A piece of thin card is held against the teeth of a cog wheel.. When the wheel is turned at high speed, a note is heard.. How can the pitch of the note be raised? (A) By pressing the card against the teeth with a greater force. (B) By turning the wheel more quickly. (C) By using a thicker card.. (D) By using a wheel with fewer teeth.. 24. Study the distance time graph of a toy car given here and choose the incorrect statement from the following.. (A) The toy car is fastest during first 10 seconds.. (B) The toy car is slowest in between 10 to 20 seconds. . (C) Distance travelled during last 10 seconds is 5 m.. (D) None of these.. . 25. When we remove polyester or woolen cloth in dark, we can see sparks and hear a cracking sound. These are due to ______.. (A) Static electricity. (B) Current electricity . (C) Reflection of light. (D) Refraction of light.. 26. A car starts from rest and is uniformly accelerated to a speed. of 30 m/s in 6 s. What is the distance travelled by the car? (A) 5 m (B) 30 m (C) 90 m (D) 180 m. 27. A crane uses a petrol engine to lift a heavy girder.. What is the overall energy conversion in the system when the girder is moving at a steady rate?. (A) Chemical into kinetic (B) Chemical into potential (C) Kinetic into potential (D) Potential into kinetic 28.. Solids cannot be compressed because ______. (A) The constituent particles are closely packed (B) The movement of the constituent particles is restricted (C) The intermolecular attractive forces are very strong (D) None of these. 29. X and Y are miscible liquids. Boiling point of X is 56°C and that of Y is 100°C. Which separation. technique can be used to separate X and Y from the mixture? (A) Separating funnel (B) Distillation (C) Evaporation (D) Condensation. 30. The solubility of potassium chloride at 20°C is 34.7 g in 100 g of water. The density of the solution. is 1.3 g mL–1. What is the w/V percentage of potassium chloride in the solution? (A) 25.76 (B) 32.98 (C) 33.49 (D) 22.56. 31. What will be the number of aluminium ions in 0.051 g of aluminium oxide? (B) 6.0 x 1023 ions (C) 12 x 1023 ions (D) 6.0 x 1020 ions. (A) 5.0 x 10–4 ions 32. An ion M2+ contains 10 electrons and 12 neutrons. What is the atomic number and mass number. of element M? (A) 10, 24. (B) 10, 22. (C) 12, 24. Copyright©2015. Science Olympiad Foundation (SOF). (D) 12, 22.

(24) 6. CLASS 9 | 14th NSO - 2011. 33. Match Column I with Column II.. Column I (P) Non-stick coating (i) (Q) Flame resistant (ii) (R) First fully synthetic fibre (iii) (S) Thermoplastic (iv) Choose the correctly matched option. (A) (P) - (ii), (Q) - (i), (R) - (iii), (S) - (iv) (C) (P) - (ii), (Q) - (iii), (R) - (iv), (S) - (i). Column II Melamine Polystyrene Teflon Nylon (B) (P) - (iii), (Q) - (i), (R) - (iv), (S) - (ii) (D) (P) - (iii), (Q) - (iv), (R) - (ii), (S) - (i). 34. Ajeet carried out an experiment in the science laboratory. He put liquid X into the flask in the setup shown below.. After a week, the lime water in the test-tube turned chalky. What is liquid X most likely to be? (A) Milk (B) Cooking oil (C) Boiling water (D) None of these. 35. Rakesh was preparing a true solution of sugar in water in a beaker. By chance, he added sugar in excess. He kept stirring the solution for sometime but the sugar settled down in the beaker. He filtered the solution. What will be the nature of the filtrate?. (A) True solution (B) Saturated solution (C) Colloidal solution (D) Suspension 36. Which of the following diagrams. shows a non-luminous flame? (A) I only (B) II only (C) I and II (D) II and IV. 37. The combustion in which a material bursts into flames without the application of heat is known as _____.. (A) Rapid combustion. (B) Spontaneous combustion. (C) Slow combustion (D) Explosion 38. Which of the following is the method of replenishing the soil with nutrients ?. (A) Organic manure (B) Fallow field (C) Crop rotation (D) All of these 39. Which of the following is an incorrectly matched pair ?. (A) Autolysis of cell – Peroxisomes (B) Control centre of the cell – Nucleus. (C) Units of hereditary characteristics – Genes (D) Formation of spindle fibres – Centrioles 40. Cutting down forests and using the land for other purposes is known as deforestation. It has adverse effects on the environment. Which of the following are correct regarding these effects ?. (i) (iii) (v) (A). Decrease in soil erosion (ii) Increase in temperature Ground water level gets lowered (iv) Droughts and floods Increase in water holding capacity of the soil (i), (ii), (iii) & (iv) (B) (ii), (iv) & (v) (C) (ii), (iii) & (iv) (D) (i), (ii), (iv) & (v) Copyright©2015. Science Olympiad Foundation (SOF).

(25) 7. CLASS 9 | 14th NSO - 2011. 41 Microorganisms are our friends and foes. Some of them are useful for us while some of them are harmful. From the given list sort out useful and harmful actions of microorganisms. Production of antibiotics, food spoiling, curd preparation, vaccine production, citrus canker.. (A). (B). (C). (D). Useful: Curd preparation, citrus canker, production of antibiotics Harmful: Food spoiling, vaccine production. Useful: Production of antibiotics, curd preparation, vaccine production. Harmful: Food spoiling, citrus canker. Useful: Citrus canker, vaccine production, curd preparation. Harmful: Food spoiling, production of antibiotics Useful: Vaccine production, curd preparation.. Harmful: Food spoiling, citrus canker, production of antibiotics.. 42. Escherichia coli in human intestine synthesizes _____.. (A) Vitamin B and D (B) Vitamin B and C (C) Vitamin A and K. (D) Vitamin B and K. 43. A layer of air known as the atmosphere surrounds the earth. The composition of the atmosphere can be changed by air pollution. Which of the following statements about air pollution are correct?. (i) (ii) (iii) (iv) (A). It affects the weather. It covers the leaves of plants and limits photosynthesis. It may cause breathing difficulties and diseases of the respiratory tract. It is mostly caused by the burning of fossil fuels. (iii) & (iv) (B) (i), (ii) & (iii) (C) (i), (iii) & (iv) (D) (i), (ii), (iii) & (iv). 44. Given below are statements made by four students about Monerans. (i) Monerans show multicellular body designs – Ashok (ii) Monerans show either autotrophic or heterotrophic nutrition – Gita (iii) All monerans possess cell wall – Ramesh (iv) Blue-green algae is an example of Monera – Amit. Which of the student(s) has/have made an incorrect statement ? (A) Ashok & Ramesh (B) Ashok only (C) Gita & Ramesh. 45. Ductless glands are also known as ______.. (A) Salivary glands (B) Endocrine glands. (C) Exocrine glands. (D) Amit & Ashok (D) Both (A) & (B). 46. Which of the following is correct for the given figure ?. (A) The part labelled 'b' is called thylakoid.. (B) The part labelled 'c' is called granum.. (C) The part labelled 'a' is the site of dark reaction. (D) The parts labelled 'a', 'b' & 'c', all possess chlorophyll containing photosynthetic pigments.. 47. Which of the following is/are true/false regarding the development of an embryo ?. (i) An embryo is made up of (ii) The stage of development (iii) The stage of development tissues and organs of the. many cells. in which all the body parts can be identified is called the foetus. in which the cells begin to form groups that develop into different body is called the embryo.. (iv) The embryo gets nutrition from uterus. (A) (i), (ii) & (iii) are true; (iv) is false (C) (i) & (iv) are true; (ii) & (iii) are false. (B) (i), (ii), (iii) & (iv) are true (D) (ii) & (iii) are true; (i) & (iv) are false. Copyright©2015. Science Olympiad Foundation (SOF).

(26) 8. CLASS 9 | 14th NSO - 2011. 48. In the given figure, in which labelled part(s) the nucleus disappears at maturity ?. (A) a. (B) b. (C) c. (D) Both b & c. 49. Match Column I with Column II and select the correct option from the codes given below. . Column I . Rhizobium Organic manure Threshing Seed drill. (a) (b) (c) (d). Column II. (i) (ii) (iii) (iv). Nitrogen fixation Separation of grains from chaff Sowing of seeds Animal excreta, cow dung and plant wastes. (e) Leguminous plants (v) Root nodules (A) a-(i), b-(iv), c-(ii), d-(iii), e-(v) (C) a-(iv), b-(i), c-(iii), d-(ii), e-(v). (B) a-(v), b-(iv), c-(iii), d-(ii), e-(i) (D) a-(i), b-(v), c-(ii), d-(iii), e-(iv). 50. The given pathogenic organism causes which of the following. diseases ? (A) Kala-azar (B) Syphilis (C) Dengue (D) Sleeping sickness SPACE FOR ROUGH WORK. Copyright©2015. Science Olympiad Foundation (SOF).

(27) Class 9 15th. SET A Year 2012. Copyright©2015. Science Olympiad Foundation (SOF).

(28) 15th NSO - SET A. 2. Mental Ability 9.  1  r + 4 . 3 ⋅ 3− r. 1.. r. (A) 3. 2.. If f(x) = x – 2x + 3x – ax + b is a polynomial such that when it is divided by (x – 1) and (x + 1), the remainders are respectively 5 and 19. Determine the remainder when f(x) is divided by (x – 2).. (A) 5. 3.. Five persons are standing in a queue. One of the two persons at the extreme ends is a professor and the other is a businessman. An advocate is standing to the right of a student. An author is to the left of the businessman. The student is between the professor and the advocate.. Counting from the left, the author is at place _______.. (A) First. 4.. In the given figure, if AB || CD and EF || DQ, then ∠PDQ is _______. (A) 48° (B) 34° (C) 72° (D) 68°. = k , then the value of k is_______.. 3 ⋅ 3− r. (C) 33. (B) 32 4. 3. (D). r. 3. 2. (B) –8. (C) 10. (B) Second. (D) 8. (C) Third. (D) Fourth. C. F. Q. P 34°. D 78°. A. E. B. 5. In the following series, how many times the sum of two consecutive numbers results an even number ?. 1 2 3 4 6 3 4 2 5 9 3 6 7 4 1 2 3 6 7 6 5 4 3 (B) 4 (C) 2. (A) 3. 6.. Find the value of. (A). 7.. In the given figure, x + y = _______. (A) 270° (B) 230° (C) 210° (D) 190°. 13. 21. (D) 5. 2 4  5 3 1 5 4 − . + 2 ÷ 7 − 5  ÷ 22 + 10 × 5 9   12 4 2 18  5 (B). 16. 35. (C). 8. 19. (D) 1 B. C. 80° A. 40°. O. x°. y°. 70° D. 8. A triangle and a parallelogram have the same base and the same area. If the sides of the triangle are 13 cm, 14 cm and 15 cm and the parallelogram stands on the base 14 cm, then the height of. the parallelogram is _______. (A) 4 cm (B) 8 cm. 9.. Select a figure from amongst the options which will continue the series established by Problem. (C) 6 cm. Figures.. Problem Figures. ?. (D) 10 cm. (A). (B). (C). Copyright©2015. Science Olympiad Foundation (SOF). (D).

(29) 15th NSO - SET A. 3. 10. A retailer increases the selling price by 25% due to which his profit percentage increases from. 20% to 25%. The percentage increase in cost price is _______. (A) 20% (B) 30% (C) 25% 3. 3. (D) 50%. 3. 11. If a + b + c = 6, the value of (2 – a) + (2 – b) + (2 – c) – 3(2 – a) (2 – b) (2 – c) is ______.. (A) 1 (B) 0 (C) –1 (D) 2 12. Choose from the options which most closely resembles the water-image of the given combination. 0. 2. 9 . (B). B. K. 5. 0. RP. BK50RP62 B 5 2 (C) K 0 9 . R. K. RP. P. 2 9 . (D). B. K. 5. (A). 5. 0. R. B. P. 9. 2. 13. In the adjoining figure, PQRS is square and MS = RN and A, P, Q and B lie on the same line. Also AP = MS and AP is the radius of the circle. Find the ratio of the area of two circles to the area of the square.. (A) p : 3. (B) 2p : 3. (C) 3p : 2. (D) 6 : p. 14. In DABC, E is the mid-point of median AD such that BE produced meets AC at F. If AC = 10 cm,. then AF = (A) 3 cm. (B) 3.3 cm. (C) 2.5 cm. (D) None of these. 15. A cosmetic company produces five different products. The sales of these five products (in lakh of packs) during 1995 and 2000 are shown in the given bar-graph. What is the approximate ratio of the sales of nail enamels in 2000 to the sales of Talcum. powders in 1995 ? (A) 7 : 2. (B) 5 : 2. (C) 4 : 3. (D) 2 :1. SCIENCE 16. A force F1 acts on a particle to accelerate it from rest to a velocity v. The force F1 is then replaced. by force F2 which decelerates it to rest. Which of the following statements is true? (B) F1 may be equal to F 2 (A) F1 must be equal to F 2 (C) F1 must be unequal to F 2 (D) None of these. 17. A person sitting on a chair in a satellite feels weightless. It is because. (A) The normal force by the chair on the person balances the earth's attraction. (B) The normal force is zero. (C) The person in the satellite is not accelerated (D) Cannot say 18. The velocity-time graph of a body is given in figure. The. (A). (B). (C). (D). maximum acceleration in m/s2 is 4 3 2 1. 19. Which quantity of a two particles system depend only on the separation between the two particles?. (A) Kinetic energy (B) Total mechanical energy (C) Potential energy (D) Both (A) and (B) Copyright©2015. Science Olympiad Foundation (SOF).

(30) 15th NSO - SET A. 4. 20. An object of mass 10 kg is at a point A on a table. It is moved to a point B by a distance 5 m. If the line joining A and B is horizontal, then what is the work done on the object by the gravitational force?. (A) 50 J (B) 100 J (C) 60 J (D) Zero. 21. A plane lamina is freely suspended from point P. The weight of the lamina is 2.0 N and the centre of gravity is at C. PC = 0.50 m, PQ = 0.40 m and QC = 0.30 m. The lamina is displaced to the position shown. What is the moment that will cause the lamina to swing?. (A) 0.60 Nm clockwise (B) 0.80 Nm anticlockwise. (C) 1.0 Nm clockwise (D) 1.0 N m anticlockwise 22. Read the given statements and mark the correct option.. Statement 1 : A person seated in a moving train is at rest with respect to another train moving in the opposite direction.. Statement 2 : If the train covers equal displacement in equal intervals of time then it moves with uniform acceleration.. (A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.. (B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.. (C) Statement 1 is true but statement 2 is false. (D) Both statements 1 and 2 are false. 23. A sound wave passes from a medium A to a medium B. The velocity of sound B is greater than that in A. Assume that there is no absorption or reflection of the boundary. As the wave moves across the boundary, the ______.. (A) Frequency of sound will increase (B) Wavelength of sound will increase. (C) Wavelength of sound will decrease (D) Intensity of sound will increase 24. The energy required to change liquid water into water vapour at the same temperature is called latent heat of vaporisation. What does this energy do?. (A) It increases the average separation of the water molecules.. (B) It decreases the average speed of the water molecules.. (C) It raises the temperature of the air near the water.. (D) It splits the water molecules into their separate atoms. 25. An artificial satellite is moving in a circular orbit of radius 42250 km. Find its speed if it takes 24 hours to revolve around the earth.. (A) 3.07 km s–1 (B) 5.67 km s–1 (C) 6.14 km s–1 (D) 1.57 km s–1 26. Read the given statements and mark the correct option.. Statement 1 : The sun seems to rise before it actually rises above horizon and it seems to set after some time it actually sets below horizon.. Statement 2 : A light ray bends towards the normal when it passes from a rarer to denser medium.. (A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.. (B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.. (C) Statement 1 is true but statement 2 is false. (D) Both statements 1 and 2 are false. 27. A man who is standing at a point X between two parallel walls. as shown in the diagram, fires a starting pistol.. He hears the first echo after 0.6 s and another one after 0.8 s.. How long after firing the pistol will he hear the next echo?. (A) 1.2 s. (B) 1.4 s. (C) 1.6 s. (D) 2.4 s Steam. 28. In which conversion do H2O molecules lose speed?. (A) Ice → Water . (B) Ice → Steam. (C) Steam → Ice . (D) Water → Steam. Copyright©2015. Science Olympiad Foundation (SOF). Water. Ice.

(31) 15th NSO - SET A. 5. 29. The table shows the results of adding weighed pieces of iron to solutions M and S.. What could the aqueous solutions M and S been? M S Solution Initial mass. (A) Copper(II) sulphate Silver nitrate of iron (g). (B) Dilute hydrochloric acid Sodium chloride M 5. (C) Iron(II) chloride Calcium chloride S 5. (D) Magnesium chloride Dilute sulphuric acid 30. Few properties of gases. X, Y and Z are given.. Mass of iron after 15 minutes (g) 4 4. Gas X : An extremely suffocating and corrosive gas, released. by burning coal and diesel.. Gases X and Y dissolve Gas Y : Given off by petrol engines.. in rain water and produce Gas Z : Produced by incomplete combustion of fuels.. acid rain. Identify gases X, Y and Z respectively on the basis of the given properties. (B) SO2, NOx, CO (C) NOx, SO2, CO (D) H2, SO2, CO. (A) CO2, H2, SO2 31. Two particles X and Y have the composition as shown in the table. The particles X and Y are Particle Number of. (A) Metal atoms electrons. (B) Non-metal atoms X 10. (C) Negative ions Y 18. (D) Positive ions. Number of. Number of. neutrons. protons. 8. 8. 18. 17. 32. Mark the correct sequence of substances obtained during fractional distillation of petroleum in. ascending order of their boiling points. (A) Petroleum gas, Kerosene, Petrol, Diesel, Paraffin wax (B) Petrol, Petroleum gas, Kerosene, Light oil, Diesel (C) Petroleum gas, Petrol, Kerosene, Diesel, Lubricating oil (D) Petroleum gas, Petrol, Lubricating oil, Diesel, Kerosene. 33.. Read the following statements and mark the correct answer. I. Artificially prepared synthetic fibre which resembles silk is known as terylene. II. Rayon is not considered as a synthetic fibre as it is regenerated from cellulose. III. PET bottles and jars are made up of polyesters. (A) Statement I is false, II and III are true. (B) Statement I is true, II and III are false. (C) Statements I and II are false, III is true. (D) Statement II is true, I and III are false.. 34. A piece of charcoal is burnt and kept in a watch glass. The burning charcoal is covered by an inverted gas jar. It is observed that the charcoal stops burning after some time. Take out the jar and add some water to it. Test the solution. with red and blue litmus paper. What do you observe? (A) Solution turns red litmus blue, hence the oxide formed by burning of charcoal was basic oxide. (B) Solution turns blue litmus red, hence the oxide formed by burning of charcoal was acidic oxide. (C) Solution does not change the colour of litmus paper, hence the oxide formed by burning charcoal was neutral. (D) Solution turns blue litmus red, hence the oxide formed by burning charcoal was basic oxide.. 35. The relative atomic mass of naturally occurring chlorine is not a whole number. What is the reason. for this? (A) Chlorine atoms can have different numbers of neutrons. (B) Naturally occurring chlorine cannot be obtained pure. (C) Chlorine is unstable. (D) The mass of the electrons has been included. Copyright©2015. Science Olympiad Foundation (SOF).

(32) 15th NSO - SET A. 6. 36. Match the Column-I with Column-II and select the correct option from the codes given below. Column-I (Mixture) Column-II (Technique used to separate the components). (a) Ammonium chloride and salt. (i). (b) Iron in its ore . (ii). (c) Drugs in blood . (iii). (d) Ethyl alcohol and water . (iv). (A) (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv). (B) (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii). (C) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i) . (D) (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv). 37. The given diagram shows a boat made from iron. Some magnesium blocks are attached to the iron below the water line to prevent rusting. Why?. (A) Magnesium reacts in preference to the iron.. (B) The magnesium forms an alloy with the iron.. (C) Magnesium reacts to form a protective coating of magnesium hydroxide on the iron. . (D) The magnesium stops oxygen in the water from getting to the iron.. 38.. Plastids differ from mitochondria on the basis of which of the following features? (A) Presence of two layers of membrane (B) Presence of green pigments (C) Presence of DNA (D) Plastids are present in plant cell while mitochondria are present in animal cell.. 39.. Given below are four statements regarding external fertilization. (i) The male and female gametes are formed and released simultaneously. (ii) Only a few gametes are released into the medium. (iii) Water is the medium of fertilization in majority of organisms exhibiting external fertilization. (iv) Offsprings developed from external fertilization have better chances of survival than those developed from internal fertilization. Which of the given statements are correct?. (A) (i), (ii) and (iii). (B) (i), (iii) and (iv). (C) (iii) and (iv). (D) (i) and (iii). (i)_ or by a machine called ___ (ii)_ . In the 40. Harvesting in our country is either done manually by ___ (iii) next step, the grain seeds are separated from the cut crop. This process is called _____ . This is (iv) carried out with the help of a machine called ___ __.. Select the correct sequence of words to complete the above paragraph.. (i) (ii) (iii) (iv). (A) Hoe Cultivator Winnowing Combine. (B) Sickle Cultivator Threshing Seed drill. (C) Hoe Harvester Winnowing Seed drill. (D) Sickle Harvester Threshing Combine. Copyright©2015. Science Olympiad Foundation (SOF).

(33) 15th NSO - SET A. 41.. 7. Select the incorrect statement regarding AIDS. (A) It is an immunodeficiency disease. (B) HIV has RNA as its genetic material. (C) AIDS can be transmitted to an infant from the infected mother through her milk. (D) The time-lag between the infection and appearance of AIDS symptoms may vary from week to month.. 42. Which of the following options is correct about India alligator and Indian giant squirrel?. (A) Both are examples of extinct species. (B) Both are found in Satpura National Park.. (C) Both are examples of endemic species. (D) Both are examples of exotic species. 43. Inorganic fertilizers are applied each year to fields bordering a lake. The fertilizers run off into the lake and cause the following six changes which together cause high mortality of fishes.. (i) Aerobic bacteria feed on dead plants. (ii) Algae reproduce faster.. (iii) Light cannot penetrate the water. (iv) Oxygen level falls.. (v) Water becomes green. (vi) Plants under water die.. Which of the following shows the correct order of the changes taking place?. (A) (iv) → (vi) → (i) → (ii) → (v) → (iii) (B) (ii) → (v) → (iii) → (vi) → (i) → (iv). (C) (v) → (ii) → (iii) → (vi) → (i) → (iv) (D) (ii) → (iii) → (v) → (iv) → (vi) → (i) 44. The given box contains some diseases caused by different pathogens such as bacteria, virus, fungi and protozoa. (i) Typhoid, (ii) Athlete’s foot, (iii) Tuberculosis, (iv) Anthrax,. (v) Malaria,. (vi) Common cold, (vii) Amoebic dysentery, (viii) Yellow vein mosaic, (ix) Influenza, (x) Pneumonia. Which of the following shows the correct category of diseases and their causative agents?. Viral Protozoan Bacterial Fungal (A) (vi) (vii) (iv) (ii) (B) (i) (vi) (iv) (iii) (C) (v) (viii) (x) (ii) (D) (x) (vi) (ix) (iii). 45. Leech, Nereis, Scolopendra, prawn and scorpion all have segmented body organization, but still they cannot be classified in one group. Which of the following is the correct basis for the classification of these organisms into different groups?. (A) Leech and Nereis belong to the phylum annelida because they have metamerically segmented body.. (B) Scolopendra, prawn and scorpion belong to phylum arthropoda, as they possess jointed appendages.. (C) Leech, Nereis and Scolopendra belong to phylum annelida because they possess closed blood vascular system.. (D) Both (A) and (B). 46.. Refer the given figure and read the following statements. (i) The part labelled P modifies into pseudopodia in WBC and helps in movement. (ii) The part labelled Q is absent in mature red blood cells in humans. P (iii) The parts labelled R and U help in production of energy. (iv) The part labelled S enlarges during maturity. Q (v) The part labelled T is spindle shaped with pointed ends in S muscle cells. T Which of the given statements are incorrect regarding this? R (A) (iii), (iv) and (v) (B) (i) and (ii) (C) (iii) and (v) (D) (i), (iii) and (iv). U. 47. Goitre can occur either due to hypothyroidism (endemic goitre) or hyperthyroidism (exophthalmic goitre). Which of the following is a correct comparison among the both? Hypothyroidism Hyperthyroidism. (A) High body temperature Low body temperature. (B) Low blood pressure High blood pressure. (C) Increased appetite Bulging of eye balls. (D) Bulging of eyeballs Tendency towards obesity Copyright©2015. Science Olympiad Foundation (SOF).

(34) 15th NSO - SET A. 49.. Given below are some characteristics of vessels and tracheids. (i) Multicellular with wide lumen (ii) Dead cells (iii) Cell walls are lignified (iv) Discontinuous lumen due to presence of end walls (v) Long, cylindrical tube-like structure (vi) Elongated cells with tapering ends Categorize the above characteristics with vessels (X) and tracheids (Y) and select the correct option. (A) X – (i), (ii), (iii), (v); Y – (ii), (iii), (iv), (vi) (B) X – (i), (iii), (vi); Y – (ii), (iii), (iv), (v) (C) X – (i), (iv), (v); Y – (ii), (iv), (v), (vi) (D) X – (i), (ii), (v), (vi); Y – (i), (iii), (iv), (vi) Which of the following is incorrect for the given figure? (A) It is a type of cropping pattern called intercropping. (B) The given cropping pattern increases the productivity of crops per unit area. (C) The given cropping pattern helps in maintaining soil fertility and makes better use of resources. (D) None of these.. 50. An ecologist studied the effects of sewage effluent on the levels of oxygen concentration, bacterial population and algal growth in a fresh water stream. The given graph is plotted based on his findings.. Increase (arbitrary unit). 48.. 8. Select the correct statement regarding the given graph. (A) There is a fall in oxygen concentration between 0 1 2 3 4 5 6 7 8 9 10 11 12 13 point Y and 4 km downstream because it is utilized Point Y Distance down the stream (km) by algae for respiration during day. (Entry Oxygen concentration Key: of (B) There is a rise in oxygen concentration between 4 km Sewage) Algae and 8 km downstream because bacterial usage of oxygen Bacteria for respiration is lower. (C) Bacterial population never recovers from 8 km onwards because all the oxygen is used up by algae. (D) There is decrease in the level of bacteria between 5 km and 7 km downstream because all the oxygen and organic matter has been used up by algal population. SPACE FOR ROUGH WORK. Copyright©2015. Science Olympiad Foundation (SOF).

(35) Class 9 15th. SET B Year 2012. Copyright©2015. Science Olympiad Foundation (SOF).

(36) 15th NSO - SET B. 1. meNtal ability 1. The value of. (A) 1. 1 1 1 1 1 is _________. − + − + 3− 8 8− 7 7− 6 6− 5 5 −2 (B) 2 (C) 0. (D) 5. 2. Read the information carefully, then use it to answer the question that follows: I. Rahul, Mohit, Rohit, Amit and Karan all collect stamps. II. Rahul has twice as many as Mohit. III. Amit and Karan have the same number. IV. Rohit has fewer than Amit. V. Mohit has half as many as Rohit. If the above statements are true, only one of the sentences below must be true. Which one is true?. (A) Rohit and Karan have same number of stamps. (B) Mohit has more stamps than Amit.. (C) Rahul has fewer stamps than Amit. (D) Rahul have as many stamps as Mohit. 3.. Given that 6x3 + 5ax – 12a leaves a remainder of – 4 when divided by (x – a), the possible value of a is _______.. (A) –2. (B). 1. 2. (C) −. 2. 3. (D) Both (A) and (B). 4. Euclid stated that all right angles are equal to one another in the form of a/an _______ .. (A) Axiom (B) Definition (C) Postulate (D) Proof 5.. Which of the following options will replace the question mark in the figure matrix?. (A). . (B). (C). . (D). ?. 6. If the code of ROUTINE is VMRGFLI, then the code of CRUELTY is _______.. (A) VPVCZRL (B) VPCVZRL (C) WPCVZRL (D) None of these 7.. In the given figure, if AB ^ BC, then x = _______ . . (A) 18°. (B) 22°. (C) 25°. (D) 32°. 8.. The given question consists of two sets of figures. Figures (i), (ii), (iii) and (iv) constitute the Problem Set. There is a definite relationship between figures (i) and (ii). Establish a similar relationship between figures (iii) and (iv) by selecting a suitable figure from the options that would replace (?) in figure (iv).. (A). S. (B). S G. (C). S. (D). S. 9. A square ABCD has an equilateral triangle drawn on the side AB (interior of the square). The. triangle has vertex at G. What is the measure of the angle DGC? (A) 160° (B) 150° (C) 75° Copyright©2015. Science Olympiad Foundation (SOF). (D) 90°.

(37) 15th NSO - SET B. 2. 10. In the given figure, ABC is an equilateral triangle with co-ordinates of B and C as B(–3, 0) and C(3, 0). The co-ordinates of the vertex A are _______.. (A) (0, 3 3) . (B) (0, 3) . (C) ( 3, 3) . (D) (3 3, 0). 11. The area of a rhombus whose perimeter is 80 m and one of whose diagonal is 24 m is _______. (B) 384 m2 (C) 483 m2 (D) 463 m2. (A) 364 m2 12. Decimal expansion of a rational number cannot be ________.. (A) Non-terminating and non-recurring (B) Non-terminating and recurring. (C) Terminating (D) None of these 13. If the markup percentage of an article is 50% and discount is also 20%, then the profit percentage. will be _______ . (A) 10%. (B) 0%. (C) 30%. (D) 20%. 14. In the given figure, if AB || CD then the measure of x is ________. . (A) 28° . (B) 18°. (C) 10°. (D) 15°. 15. P and Q invest some amount under S.I. and C.I. respectively but for the same period at 6% per annum. Each gets a total amount of ` 65,000 at the end of 6 years. Which of the following is definitely true?. (i) Q's initial principal is less than that of P. (ii) Q's initial principal is equal to that of P.. (iii) P's percentage earnings is less than that of Q.. (A) (i) only (B) (i) and (iii) (C) (iii) only (D) None of these. Science 16. Read the given statements and mark the correct option.. Statement 1 : If an earth satellite moves to a lower orbit, the speed of satellite increases.. Statement 2 : The speed of satellite is a constant quantity for all orbits of earth. (A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. (B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. (C) Statement 1 is true but statement 2 is false. (D) Both statements 1 and 2 are false.. 17. Ships use sound waves to find the vertical distance to the seabed. A pulse of sound waves is sent out and the echoes are detected. A ship emits a pulse of waves lasting 0.50 s. The waves have a. frequency of 3600 Hz. How many complete wavelengths does the pulse contain? (A) 1800 (B) 3600 (C) 7200 (D) 18000. 18. The given apparatus shows a heavy piston supported by gas trapped in a cylinder. The cross-sectional area of the piston is 4.0 × 10–4 m2 . The pressure of the gas inside the cylinder is 1.5 × 105 Pa and atmospheric pressure is 1.0 × 105 Pa. Find the mass of the piston (Take g = 10 m s–2).. (A) 1 kg (B) 2 kg. (C) 3 kg (D) 4 kg Copyright©2015. Science Olympiad Foundation (SOF).

(38) 15th NSO - SET B. 3. 19. Work done in time t on a body of mass m which is accelerated from rest to a speed v in time t1 as a function of time t is given by. (A). 1 v  2 m t 2  t1 . v  (B) m   t 2  t1 . 2. (C). 1  mv  2 t 2  t1 . (D). t  1 mv 2   2  t1 . 2. 20. The distance of a particle as a function of time is shown here. The graph indicates that. (A) The particle starts with certain velocity but the motion is retarded and finally the particle stops. (B) The velocity of the particle is constant throughout. (C) The acceleration of the particle is constant throughout in the direction of motion. (D) The particle starts with some constant velocity, the motion is accelerated, and finally the particle moves with some constant velocity 21. A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of. 400 m in 20 s. Find the force acting on it if its mass is 7 metric tonnes. (A) 7000 N (B) 14000 N (C) 28000 N. (D) 3500 N. 22. Two plane mirrors are arranged at right angles to each other as shown in figure. A ray of light is incident on the horizontal mirror at angle q to the normal. For. . what value of q the ray emerges parallel to the incoming ray after reflection from. the vertical mirror? (A) 60° only. (B) 30° only. (C) Both (A) and (B). (D) None of these. 23. Two identical balls are at rest side by side at the bottom of a hill. Sometime after ball A is kicked up the hill, ball B is given a kick up the hill. Ball A is headed downhill when it passes ball B. headed up the hill. At the instant when ball A passes ball B, it has the same _______. (A) Position and velocity as ball B (B) Position and acceleration as ball B (C) Velocity and acceleration as ball B (D) Displacement and velocity as ball B. 24. A boy dropped a stone in a well 45 m deep. If speed of sound is 340 m s–1, then after how much. 26. A manometer is connected to a gas supply. Pressure can be measured in cm of water. The pressure of the gas is. (A) 8 cm of water more than atmospheric pressure . (B) 12 cm of water more than atmospheric pressure. (C) 8 cm of water less than atmospheric pressure. (D) 12 cm of water less than atmospheric pressure. (D) 10 m s–1 Connected to gas supply. Air. Water. 4 cm. 25. A ball of mass 200 g is thrown with a speed of 20 m s–1. The ball. strikes a bat and rebounds along the same line at a speed of 40 m s–1. Variation of the interaction force, as long as the ball remains in contact with the bat is as shown in the figure. What is the speed of the ball at the instant the force acting on it is, maximum? (B) 30 m s–1 (C) 20 m s–1. (A) 40 m s–1. (D) 4.13 s. 8 cm. time, he will hear the splash ? (Take g = 10 m s–2). (A) 1.13 s (B) 2.13 s (C) 3.13 s. 27. Which of the following reasons is true about the electric charge acquired by cloud?. (A) By the ultraviolet rays of sun falls on them. (B) Air molecules rub against water molecules.. (C) Cold currents of air rub against hot currents of water. (D) Both (B) and (C) Copyright©2015. Science Olympiad Foundation (SOF).

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