LogicaL reasoning
Statement 2 Once the motion has started, the inertia of rest has been overcome
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 and statement 2 is false.
D. Both statements 1 and 2 are false.
19. A stone is thrown upwards from a point at the edge of a cliff.
After the stone has reached its maximum height, it falls past the cliff edge to the beach, as shown in the given figure.
The initial vertical component of the velocity of the stone is 10 m s–1. The time taken between the stone passing the edge of the cliff on its way down and hitting the beach is 1.2 s. Ignoring air resistance, find the height of the cliff.
A. 5 m B. 7 m
C. 12 m D. 19 m
20. Ultrasound is emitted from a ship directly downwards into water. The diagram below shows the time duration for ultrasound to return to the receiver on the ship as the ship travels from point X to point Y along the surface of the water. At which position is the water deepest?
A. S B. R
C. Q D. P
21. When a body floats in water 1
3 remains outside, whereas 3
4
th
of its volume remains outside when it floats in a liquid. The density of the 22. The acceleration due to gravity of the Earth and the
Moon are 10 m s–2 and 1.7 m s–2 respectively. When an astronaut jumps on the Moon, then ______.
A. He will take a longer time to reach the top and a longer time to come down as compared to jumping on the Earth
B. He will take a longer time to reach the top and a shorter time to come down as compared to jumping on the Earth
C. He will take a shorter time to reach the top and a longer time to come down as compared to jumping on the Earth
D. He will take a shorter time to reach the top and a shorter time to come down as compared to jumping on the Earth
23. Which of the following statements is true?
A. The image of a virtual object is called a virtual image.
B. If the reflected rays are converging, we get a real image.
C. If the incident rays are converging, we get a real object.
D. If the image is virtual, the corresponding object is called a virtual object.
24. A box originally at rest, slides down from point S to point T as shown.
25. A body thrown vertically up with a velocity u reaches the maximum height h after T second. Which of the following statements is correct?
A. At a height h/2 from the ground its velocity is u/2.
B. At a time T its velocity is u.
C. At a time 2T its velocity is –u.
D. At a time 2T its velocity is – 6u.
26. The freezing and boiling points of a substance ‘P’
are –220°C and –185°C respectively.
At which of the following range of temperatures will
‘P’ exist as a liquid?
A. Between –175°C and –210°C B. Between –190°C and –225°C C. Between –200°C and –160°C D. Between –195°C and –215°C
27. Observe the following diagrams carefully.
solutionSalt
If reaction occurs only in beakers I, III and VI, then which of the following statements is correct?
A. S is less reactive than P but more reactive than T.
B. R and S are more reactive than Q.
C. T and R are less reactive than K.
D. Q is more reactive than R but less reactive than P.
S 1
2 3
4 T
17th NSO - SET B 5 28. Some statements about the Rutherford’s a-particle
scattering experiment are given :
I. As most of the a-particles passed through the gold foil without getting deflected, the positive charge of the atom occupies the entire space.
II. As very few particles were deflected from their path, very little space inside the atom is empty.
III. As a very small fraction of a-particles were deflected by 180°, all the positive charge and mass of the gold atom were concentrated in a very small volume within the atom.
Select the correct statement(s).
A. I and II B. I and III
C. II and III D. III only
29. An ionic compound of element M and chlorine has the formula MCl3. The molecular mass of MCl3 is
30. Read the following statements carefully and identify X, Y and Z.
X : Hard as stones, used to cook food and to produce electricity in thermal power plants
Y : A petroleum product, used in place of coal tar for metalling the roads
Z : A pure form of carbon, used in the manufacture of steel and in the extraction of many metals
X Y Z
A. Coal Bitumen Coke
B. Coal tar Coal Paraffin wax
C. Coal tar Diesel Coke
D. Coke Bitumen Coal
31. Mr. Verma while watching TV suddenly came across an accident as shown below.
In the above situation, what should Mr. Verma do?
A. He should pour water on the fire.
B. He should use oil to cut off the supply of air.
C. He should use CO2 extinguisher on fire.
D. He should use LPG to control fire.
32. Use of drugs like ephedrine and insulin by athletes is banned.
Rakesh, Amit, Deepak and Tarun were asked by a trainer to give their urine samples for the tests.
Chromatogram of their urine samples and drugs is shown below :
× × × × × ×
Solvent front
Start line
Ephedrine Insulin Amit Deepak TarunRakesh
Study the given chromatogram carefully and choose the incorrect statement among the following.
A. Deepak used both the drugs.
B. Rakesh and Deepak used insulin.
C. Rakesh used ephedrine.
D. Amit and Tarun did not use any of the given drugs.
33. Match column-I with column-II and choose the correct option using the codes given below.
Column-I Column-II
(a) Terylene (i) Rayon
(b) Bakelite (ii) Thermoplastic
(c) PVC (iii) Polyester
(d) Artificial silk (iv) Thermosetting A. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
B. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii) C. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i) D. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
34. Maximum number of molecules are present in ____.
A. 4.9 × 10–3 mg of H2SO4
Which structures would be present in large quantities in lipid synthesizing cells?
A. 1, 2, 4 and 5 B. 1, 3 and 4 C. 2, 3 and 5 D. 3, 4 and 5
36. Raman set up an experiment as shown here and kept
After four hours, he wrote down his observations as follows :
(i) The water in the beaker contained reducing sugars.
(ii) The reducing sugars passed into the beaker by diffusion.
(iii) The water in the beaker contained no starch.
(iv) The partially permeable membrane of visking tube prevented passage of starch into the beaker.
(v) Reducing sugars were formed in the visking tube.
Which of these observations is/are incorrect?
A. (iv) and (v) B. (iii) only
C. (v) only D. None of these
37. Select the correct option regarding the given organisms.
(i) (ii) (iii) (iv) (v)
A. Organisms (i), (ii) and (v) show tissue level of body organisation.
B. Organisms (i), (iv) and (v) are triploblastic animals.
C. Organisms (iii), (iv) and (v) all are eucoelomates.
D. Organisms (i), (iii), (iv) and (v) possess notochord in some stage of their life .
38. Which of these epithelia is chiefly involved in
A. Site X has the highest content of dissolved oxygen while site Y has the lowest content of dissolved oxygen.
B. There is a high concentration of nitrogen compounds at site Z.
C. There are very few fishes found at site Z.
D. All of these
40. Match column-I with column-II and select the correct option from the codes given below.
Column-I Column-II
A. (iii), (vi) (ii) (i), (iv) (v), (vii) B. (i), (ii), (v) (iii), (vi) (iv) (vii) C. (v) (i), (ii), (vi) (iv) (iii), (vii) D. (iii), (v) (ii), (vi) (i), (iv) (vii) 41. In an ecosystem, four
major interdependent components were in the given proportions.
If male cats are removed from the given ecosystem, then which of these figures would show the new composition of the same ecosystem after a gap of 3 years?
A.
Number Cats Mice Bees Plants B.
Number Cats Mice Bees Plants
C.
Number Cats Mice Bees Plants D.
Number Cats Mice Bees Plants
Number Cats Mice Bees Plants
17th NSO - SET B 7 42. Identify the given organisms shown in the figure.
X Y
Which of the following statements is/are correct about X and Y?
(i) X is Anopheles while Y is Culex.
(ii) X spreads filariasis while Y spreads malaria.
(iii) The female Y is the vector of malaria.
(iv) The male Y is the vector of filariasis.
(v) X is host for a protozoan and Y is a host for a nematode.
A. (ii) and (iii) B. (ii) and (v) C. (ii) only D. (i), (iii) and (iv) 43. Mohit was asked to draw a diagram of sclerenchyma
as seen in longitudinal section and label it. His figure is as shown. Find out the mistake he has made in the diagram.
Lumen Simple pit pair
Lignified thick wall
A. The pit pair is bordered not simple.
B. The cell walls are not lignified in sclerenchyma.
C. The nucleus and cytoplasm are not shown.
D. It is a transverse section and not the longitudinal section.
44. Refer to the given figure and identify the labelled connective tissues X and Y.
45. Read the following statements regarding female reproductive system and select the correct option.
(i) If the ovum released from the ovaries is not fertilized, then it is shed alongwith blood during menstruation.
(ii) Menopause occurs in the females at an age of 45–50 years.
C. Statements (ii), (iii) and (iv) are true; while statement (i) is false.
D. Statements (i) and (ii) are true; while statements (iii) and (iv) are false.
achievers section
46. An object of mass 20 kg moves along a straight line on a smooth horizontal surface. A force F acts on the object in its direction of motion. A graph of force against time is shown here. What is the velocity of the object at t = 6 s if its velocity at t = 4 s is (iii) of the sound wave depends upon the force with which an object is made to vibrate. A sound of
(iv) frequency is called a (v) .
(i) (ii) (iii) (iv) (v) A. Amplitude Loudness Loudness Double Note B. Loudness Amplitude Amplitude Single Tone C. Loudness Amplitude Amplitude Double Tone D. Amplitude Loudness Loudness Single Note
48. Four strips of fresh potato P, Q, R and S were immersed in solutions of different concentrations.
Osmosis occurred according to the concentration difference between cell sap and ambient solution.
A graph was plotted between initial length of strips and the change in length after osmosis.
Which of these strips was placed in the most diluted solution?
A. S B. Q
C. R D. P
sPace For roUgh WorK
49. The solubility of two substances, X and Y at 35°C and 75°C is given in the table.
Temperature (°C)
Maximum amount (g) that can dissolve in 100 g of water Substance X Substance Y
35 30 40
75 70 50
Two solutions, M and N are shown below : 200 g of
water at 75°C 100 g
of X 80 g
of Y
Solution M Solution N
If the temperature of solutions M and N is dropped to 35°C, then amount of X and Y crystallized out will be ______.
A. 40 g, 30 g B. 25 g, 80 g
C. 40 g, 0 g D. 80 g, 55 g
50. A comparison between two cropping patterns X and Y is given below. What are X and Y?
X Y
Aim is to minimise risk of
crop failure Aim is to increase productivity per unit area
Seeds of component crops
are mixed before sowing Seeds of component crops are not mixed Sowing is not done in
rows Sowing is done in rows
in a precise pattern A. X - Mixed cropping; Y - Inter-cropping B. X - Inter-cropping; Y - Crop rotation C. X - Mixed cropping; Y - Crop rotation D. X - Inter-cropping; Y - Mixed cropping