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I PUC [NEET - SPARK] Page 1 of 14

SHAHEEN GROUP OF INSTITUTIONS

Bidar

(Head office)

Class : I PUC [NEET - SPARK] Sub: PCB Marks: 720 Date: 12-06-2021 IMPORTANT INSTRUCTIONS

1. Use of Electronic / Manual Calculator is prohibited.

2. The candidates are governed by all Rules and Regulations of the examination with regard to their conduct in the Examination Hall. All cases of unfair means will be dealt with as per Rules and Regulations of this examination.

1. On which of the following scales of temperature, the temperature is never negative (a) Celsius (b) Fahrenheit (c) Reaumur (d) Kelvin

2. At what temperature the centigrade (Celsius) and Fahrenheit, readings are the same

(a)– 40Β° (b) + 40Β° (c) 36.6Β° (d) – 37Β°

3. A thin copper wire of length 𝑙 increases in length by 1% when heated from 0 Β°C to 100 Β°C. If a thin copper plate of area 2𝑙 Γ— 𝑙 is heated form 0 0C to 100 Β°C, the

percentage increase in its area would be

(a)1 % (b) 4% (c) 2 % (d) 3 %

4. A pendulum clock made of invar has a period of 0.5 s at 20 0C. If the clock is used in a

climate where average temperature is 30 Β°C, how much fast or slow will the clock run in 106 seconds?

(𝛼𝑖𝑛 π‘£π‘Žπ‘Ÿ = 10βˆ’6 0πΆβˆ’1)

(a) 5 seconds fast (b) 10 seconds fast (c) 10 seconds slow (d) 5 seconds slow

5. The volume of mercury in the bulb of a thermometer is 10βˆ’6 π‘š3. The area of crosssection of the capillary tube is 2 Γ— 10βˆ’7π‘š2. If the temperature is raised by 100 Β°C, the increase in the length of the mercury column is

(𝛾𝐻𝐺 = 18 Γ— 10βˆ’5/ Β°C)

(a)18 cm (b) 0.9 cm (c) 9 cm (d) 1.8 cm 6. If specific heat of a substance is infinite, it means.

(a)Heat is given out (b) Heat is taken in

(c)No change in temperature takes place whether heat is taken in or given out (d) All of the above

7. How much heat energy is gained when 5 kg of water at 20Β°C is brought to its boiling point

(Specific heat of water = 4.2 kJ π‘˜π‘”βˆ’1π‘βˆ’1)

(a) 1680 kJ (b) 1700 kJ (c) 1720 kJ (d) 1740 kJ

8. Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of

(a)1 : 2 (b) 1 : 8 (c) 1 : 4 (d) 2 : 1

9. Two rods of different materials and different lengths but of equal cross sectional area are joined together to form a liner compound rod. One end of the rod is a content high temperature. Then, in the steady state, the temperature gradient in each rod. (a) has the same value

(b) is proportional to the thermal conductivity

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I PUC [NEET - SPARK]

10. Two rods A and B of equal lengths have the thermal conductivities 𝐾𝐴 and 𝐾𝐡. Each rod has its ends at temperatures 𝑇1and 𝑇2 respectively. If 𝐴𝐴 and 𝐴𝐡 are the area of cross section of the rods A and B and same rate of flow of heat is maintained in both of them then (a) 𝐾𝐴𝐾𝐡 = 𝐴𝐴𝐴𝐡 (b) 𝐴𝐴 𝐴𝐡 = 𝐾𝐴 𝐾𝐡 (c) 𝐾𝐴 𝐾𝐡 = 𝐴𝐡 𝐴𝐴 (d) 𝐾𝐴 𝐾𝐡 = √ 𝐴𝐴 𝐴𝐡

11. A body cools from 50 Β°C to 49 Β°C in 5 seconds. If the temperature of the surrounding is 30 Β°C, the time taken by the body to cool form 40 Β°C to 39 Β°C is

(a) 5 s (b) 7.5 s (c) 10 s (d) 2.5 s

12. A black body of a mass 34.38 g and surface area 19.2 π‘π‘š2 is at an initial temperature of 400K. It is allowed to cool inside an evacuated enclosure kept at constant

temperature 300K. the rate of cooling is 0.04 Β°C π‘ βˆ’1. The specific heat of body is (Stefan’s constant 𝜎 = 5.73 Γ— 10βˆ’8 π½π‘šβˆ’2 πΎβˆ’4)

(a) 2800 J π‘˜π‘”βˆ’1 πΎβˆ’1 (b) 2100 J π‘˜π‘”βˆ’1 πΎβˆ’1 (c) 1400 J π‘˜π‘”βˆ’1 πΎβˆ’1 (d) 1200 J π‘˜π‘”βˆ’1 πΎβˆ’1

13. For two black metallic spheres of radius 4 m, at 2000 K and 1 m, at 4000 K the ratio of thermal powers radiated is

(a)1 : 1 (b) 4 : 1 (c)1 : 4 (d) 2 :1

14. A black body has a wavelength



at temperature 2000 K. Its corresponding wavelength at temperature 3000 K will be

(a) 2 3 (b) 3 2 (c) 4 9 (d) 9 4

15. Which one of the following is π‘£π‘š -T graph for perfectly black body? π‘£π‘š is the frequency of radiation with maximum intensity. T is the absolute temperature

(a)A (b) B (c) C (d) D

16. The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

(a) 6.25% (b) 20% (c) 26.8% (d) 12.5%

17. A sample of 0.1 g of water at 100Β°C and normal pressure (1.013 Γ— 105 Nπ‘šβˆ’2) requires 54 cal of heat energy to convert to steam at 100Β°C. If the volume

of the steam produced is 167.1 cc, the change in internal energy of the sample, is (a) 42.2 J (b) 208.7 J (c) 104.3 J (d) 84.5 J

18. Thermodynamic processes are indicated in the following diagram.

Match the following

Column-I Column-II

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S. Process IV d. Isothermal

(a) P β†’ a, Q β†’ c, R β†’d, S β†’b (b) P β†’c, Q β†’a, R β†’d, S β†’b (c) P β†’c, Q β†’d, R β†’b, S β†’a (d) P β†’d, Q β†’b, R β†’a, S β†’ c 19. A Carnot engine having an efficiency of 1

10 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the

reservoir at lower temperature is

(a) 1 J (b) 90 J (c) 99 J (d) 100 J

20. A perfect gas goes from state A to state B by absorbing 8 Γ— 105 joule and doing

6.5 Γ— 105 joule of external work. If it is taken from same initial state A to final state B in another process in which it absorbs 105 J of heat, then in the sec ond process work done

(a) On gas is 105 J (b) On gas is 0.5 Γ— 105 J (c) By gas is 105 J (d) By gas is 0.5 Γ— 105 J

21. In an adiabatic expansion, a gas does 25 J of work while in adiabatic compression 100 J of work is done on the gas. The change in internal energy in two processes respectively are

(a)25 J and –100 J (b)–100 J and –25 J (c)–25 J and 100 J (d)25 J and 100 J

22. A mass of diatomic gas (𝛾 = 1.4) at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from 27Β°C to 927Β°C. The pressure of the gas in the final state is.

(a)256 atm (b) 8 atm (c) 28 atm (d) 68.7 atm

23. Following figure shows P-T graph for four processes A, B, C and D. Select the correct alternative.

(a) A – Isobaric process (b) B – Adiabatic process (c) C – Isochoric process (d) D – Isothermal process

24. The pressure and volume of a gas are changed as shown in the P-V diagram in this figure. The temperature of the gas will

(a) Increase as it goes from A to B (b) Increase as it goes from B to C (c) Remain constant during these changes (d) Decrease as it goes from D to A 25. One mole of an ideal gas undergoes an isothermal change at temperature 'T' so that

its volume v is doubled. R is the molar gas constant. Work done by the gas during this change is

(a) RT log 4 (b) RT log 2 (c) RT log 1 (d) RT log 3

26. When an ideal diatomic gas is heated at constant pressure, its internal energy increased by 50cal then the work done by the gas is

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I PUC [NEET - SPARK]

27. At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphere? (Given : Mass of oxygen molecule (m) = 2.76 Γ— 10βˆ’26kg Boltzmann’s constant π‘˜π΅ = 1.38 Γ— 10βˆ’23 π½πΎβˆ’1)

(a) 5.016 Γ— 104 K (b) 8.360 Γ— 104 K (c) 2.508 Γ— 104 K (d) 1.254 Γ— 104 K

28. A gas mixture consists of 2 moles of 𝑂2 and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

(a)4 RT (b) 15 RT (c) 9 RT (d) 11 RT

29. A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule of the gas is m. Which of the following gives the density of the gas?

(a) 𝑃 (π‘˜π‘‡) (b) π‘ƒπ‘š (π‘˜π‘‡) (c) 𝑃 (π‘˜π‘‡π‘‰) (d) π‘šπ‘˜π‘‡

30. The molecules of a given mass of a gas have r.m.s velocity of 200π‘šπ‘ βˆ’1 at 270

C

and 1.0Γ— 105 π‘π‘šβˆ’2 pressure. When the temperature and pressure of the gas

are respectively, 1270

C

and 0.05Γ— 105 π‘π‘šβˆ’2 , ther.m.s.velocity of its molecules in π‘šπ‘ βˆ’1 is: (a) 100 √2 (b) 400 √3 (c) 100 √2 3 (d) 100 3 31. Boyle’s law is obeyed by

(a) Real gas of constant mass and temperature (b) Ideal gas of constant mass and temperature

(c) Both ideal and real gases at constant temperature and variable mass (d) Both ideal and real gases of constant mass and variable temperature

32. By increasing temperature of a gas by 6Β°C its pressure increases by 0.4 %, at constant volume. Then initial temperature of gas is

(a)1000 K (b) 1500 K (c) 2000 K (d) 750 K 33. A real gas behaves as an ideal gas at

(a) Very low pressure and high temperature (b) High pressure and low temperature (c) High pressure and high temperature (d) Low pressure and low temperature

34. The equation of state, corresponding to 8 g of 𝑂2is. (a) 𝑃𝑉 = 8𝑅𝑇 (b) 𝑃𝑉 = 𝑅𝑇

4 (c) 𝑃𝑉 = 𝑅𝑇 (d) 𝑃𝑉 = 𝑅𝑇

2

35. During an experiment an ideal gas is found to obey an additional law

V

𝑃2= constant. The gas is initially at temperature T and volume V, when it expands to volume 2V, the resulting temperature is

(a) 𝑇

2 (b) 2T (c) √2𝑇 (d)

𝑇 √2

36. A particle is moving such that its acceleration is represented by the equation a = βˆ’ 𝑏π‘₯, where π‘₯ is its displacement from mean position and b is a constant. Its time period will be

(a) 2πœ‹ βˆšπ‘ (b) 2πœ‹ βˆšπ‘ (c) 2πœ‹ 𝑏 (d) 2√ πœ‹ 𝑏

37. The time period and amplitude of particle executing simple harmonic motion are 6 second and 3 cm. respectively. Its maximum velocity in cm/ sec, will be

(a) πœ‹

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38. The displacement of a particle executing S. H. M. at any instant t is x = 0.01 sin 200 ( t + 0.05) then its time period will be

(a) 0.2 sec (b) 0.1 sec (c) 0.06 sec. (d) 0.02 sec.

39. The amplitude and time period of a particle executing S. H. M. are A and T respectively. The speed of the particle at π‘₯ = 𝐴

2will be (a) πœ‹π΄βˆš3 𝑇 (b) πœ‹π΄ 𝑇 (c) πœ‹π΄βˆš3 2𝑇 (d) 3πœ‹2𝐴 𝑇

40. At what distance from mean position is the potential energy of a particle executing S. H. M. equal to its kinetic energy

(a) π‘Ž

2 (b) a (c)

π‘Ž

√2 (d) √2π‘Ž

41. When the period of oscillation of a body executing simple harmonic motion is doubled. Its energy becomes

(a) double (b) one fourth (c) half (d) four times

42. The equation of displacement of a particle executing S.H.M. is x = 0.40 cos (2000t + 8) The frequency of the particle is

(a) 103

πœ‹ 𝐻𝑧 (b) 10

3𝐻𝑧 (c) 2 Γ— 103 𝐻𝑧 (d) 20 𝐻𝑧

43. The amplitudes of two similar harmonic oscillators are 1 cm and 4 cm respectively. The ratio of their energies will be

(a) 16 1 (b) 1 16 (c) 1 4 (d) 4 1

44. A particle of mass 5 gm is executing S. H. M. of amplitude 8 cm. It takes 1 second in completing 16 oscillations. Its maximum velocity will be

(a) 256 πœ‹ m/sec (b) 25.6 πœ‹ m/sec (c) 2.56 πœ‹ m/sec (d) Zero

45. A body is vibrating in simple harmonic motion with an amplitude or 0.06 m and frequency of 15Hz. The maximum velocity and maximum acceleration of the body is (a) 5.65 m/s and 5.32 Γ— 102m/𝑠2 (b) 6.82 m/s and 7.62 Γ— 102m/𝑠2

(c) 8.91 m/s and 8.21 Γ— 102m/𝑠2 (d) 9.82 m/s and 9.03 Γ— 102m/𝑠2

46. The equilibrium constant for the reversible reaction

47. Given the reaction between 2 gases represented by 𝐴2 and 𝐡2 to give the compound AB(g).

𝐴2 (g) + B2(g) β‡Œ 2 AB(g).

At equilibrium, the concentration of 𝐴2 = 3.0 Γ— 10βˆ’3 M

of 𝐡2= 4.2 Γ— 10βˆ’3 M of AB = 2.8 Γ— 10βˆ’3 M

lf the reaction takes place in a sealed vessel at 527°C, then the value of 𝐾𝐢 will be :

(a) 2.0 (b) 1.9 (c) 0.62 (d) 4.5

48. For the reaction C(s) + 𝐢𝑂2 (g)β‡Œ2CO(g) , the partial pressures of 𝐢𝑂2 and CO are 2.0 and 4.0 atm respectively at equilibrium. The 𝐾𝑃 for the reaction is.

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49. For the following reaction in gaseous phase

50. The 𝐾𝑃/𝐾𝐢 ratio will be highest in case of

51. Which of the following is an example of homogeneous equilibrium ?

52. If for the reaction

𝑁2 + 3𝐻2 β‡Œ 2𝑁𝐻3, βˆ†π» = –92.38KJ/mole than what happens if the temperature is increased?

(a) Reaction proceed forward (b) Reaction proceed backward (c) No effect on the formation of product (d) None of these

53. The correct relationship between free energy change in a reaction and the corresponding equilibrium constant, 𝐾𝑐 is

(a) βˆ†πΊ = 𝑅𝑇 ln 𝐾𝑐 (b) βˆ’ βˆ†πΊ = 𝑅𝑇 ln 𝐾𝑐 (c) βˆ†πΊ0 = 𝑅𝑇 ln 𝐾𝑐 (d) βˆ’ βˆ†πΊ0 = 𝑅𝑇 ln 𝐾𝑐

54. According to Le-chatelier’s principle, adding heat to a solid β‡Œ liquid equilibrium will cause the

(a) temperature to increase (b) temperature to decrease (c) amount of liquid to decrease (d) amount of solid to decrease 55. For the manufacture of ammonia by the reaction

𝑁2 + 3𝐻2 β‡Œ 2𝑁𝐻3+ 2π‘˜π‘π‘Žπ‘™ the favourable conditions are (a) Low temperature, low pressure and catalyst

(b) Low temperature, high pressure and catalyst (c) High temperature, low pressure and catalyst (d) High temperature, high pressure and catalyst

56. Which of the following reaction will be favoured at low pressure ?

57. Would gaseous HCl be considered as an Arrhenius acid ?

(a) Yes (b) No

(c) Not known (d) Gaseous HCl does not exist 58. 𝐡𝐹3 is an acid according to

(a) Arrhenius concept (b) Bronsted-Lowry concept (c) Lewis Concept (d) Both (b) and (c)

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60. Conjugate acid of 𝑁𝐻2βˆ’ is.

(a) 𝑁𝐻4+ (b) 𝑁𝐻3 (c) 𝑁𝐻2 (d) NH

61. Which of these is least likely to act as Lewis base?

(a) πΉβˆ’ (b) 𝐡𝐹3 (c) 𝑃𝐹3 (d) CO

62. Three reactions involving 𝐻2𝑃𝑂4βˆ’ are given below:

63. The pH of a 10βˆ’3M HCl solution at 25Β°C if it is diluted 1000 times, will be –

(a) 3 (b) zero (c) 5.98 (d) 6.02

64. What is the approximate pH of a 1 Γ— 10βˆ’3M NaOH solution?

(a) 3 (b) 11 (c) 7 (d) 1 Γ— 10βˆ’11

65. The pH of 0.005 molar solution of 𝐻2𝑆𝑂4 is approximately:

(a) 0.010 (b) 1 (c) 2 (d) 0.005

66. The first and second dissociation constants of an acid 𝐻2A are 1.0 Γ— 10βˆ’5 and 5.0 Γ— 10βˆ’10 respectively. The overall dissociation constant of the acid will be (a) 0.2 Γ— 105 (b) 5.0 Γ— 10βˆ’15 (c) 5.0 Γ— 1015 (d) 5.0 Γ— 10βˆ’5

67. The structure of 𝐻2𝑂2is

(a) spherical (b) non-planar (c) planar (d) linear 68. The volume strength of 1.5 N𝐻2𝑂2 solution is

(a) 8.8 (b) 8.4 (c) 4.8 (d) 5.2

69. The

O

-

O

-

H

bond angle in 𝐻2𝑂2 is.

(a) 1060

(b) 1090 28' (c) 1200

(d) 970 70. Which of the following groups of ions makes the water hard?

(a) Sodium and bicarbonate (b) Magnesium and chloride (c) Potassium and sulphate (d) Ammonium and chloride

71. Which of the following metal evolves hydrogen on reacting with cold dilute 𝐻𝑁𝑂3 ?

(a)Mg (b) Al (c) Fe (d) Cu

72. The reaction of 𝐻2𝑂2with 𝐻2

S

is an example of ...reaction. (a) Addition (b) Oxidation (c) Reduction (d) Acidic 73. Ordinary hydrogen at room temperature is a mixture of

(a) 75% of o-Hydrogen + 25% of p-Hydrogen (b) 25% of o-Hydrogen + 75% of p-Hydrogen (c) 50% of o-Hydrogen + 50% of p-Hydrogen (d) 1% of o-Hydrogen + 99% of p-Hydrogen 74. Ionic hydrides are usually

(a) Good electrically conductors when solid (b) Easily reduced

(c) Good reducing agents

(d) Liquid at room temperature

75. There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength (a) 3.00% (b) 4.045% (c) 2.509% (d) 3.035%

76. Which of the following oxides is most acidic in nature?

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I PUC [NEET - SPARK]

77. Among πΆπ‘Žπ»2 ,𝐡𝑒𝐻2 ,π΅π‘Žπ»2, the order of ionic character is (a) 𝐡𝑒𝐻2 < π΅π‘Žπ»2 < πΆπ‘Žπ»2 (b) πΆπ‘Žπ»2 < 𝐡𝑒𝐻2 < π΅π‘Žπ»2 (c) 𝐡𝑒𝐻2 < πΆπ‘Žπ»2 < π΅π‘Žπ»2 (d) π΅π‘Žπ»2 < 𝐡𝑒𝐻2 < πΆπ‘Žπ»2

78. Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under in electric field?

(a) K (b) Rb (c) Li (d) Na

79. The suspension of slaked lime in water is known as. (a) lime water (b) quick lime

(c) milk of lime (d) aqueous solution of slaked lime

80. In context with berylliumm, which one of the following statement is incorrect ? (a) It is renderd passive by nitric acid

(b) It forms 𝐡𝑒2

C

(c) its salts rarely hydrolyze

(d) Its hydride is electron - defincient and polymeric

81. The function of β€œSodium pump” is a biological process operating in each and everly cell of all animals. Which of the following biologically important ions is also a

constiuent of this pump?

(a)𝐾+ (b) 𝐹𝑒2+ (c)πΆπ‘Ž2+ (d) 𝑀𝑔2+

82. Which one of the following compounds is a peroxide?

(a) 𝐾𝑂2

(b) π΅π‘Žπ‘‚2

(c) 𝑀𝑛𝑂2

(d) 𝑁𝑂2

83. Which of the following oxides is not expeted to react with sodium hydroxide ? (a)

CaO

(b) 𝑆𝑖𝑂2

(c)

BeO

(d) 𝐡2 𝑂3

84.

The sequence of ionic mobility in aqueous solution is

(a) 𝑅𝑏+ > 𝐾+ > 𝐢𝑠+ > π‘π‘Ž+ (b) π‘π‘Ž+ > 𝐾+ > 𝑅𝑏+ > 𝐢𝑠+ (c) 𝐾+ > π‘π‘Ž+ > 𝑅𝑏+ > 𝐢𝑠+ (d) 𝐢𝑠+ > 𝑅𝑏+ > 𝐾+ > π‘π‘Ž+ 85. Which one of the following elements is unable to form 𝑀𝐹63βˆ’ ion?

(a)B (b) Al (c) Ga (d) In

86. It is because of inability of 𝑛𝑠2 electrons of the valence shell to participate in bonding that

(a) 𝑆𝑛 2+is oxidising while 𝑃𝑏 4+ is reducing

(b) 𝑆𝑛 2+ and 𝑃𝑏 2+ are both oxidising and reducing (c) 𝑆𝑛 4+ is reducing while 𝑃𝑏 4+ is oxidising

(d) 𝑆𝑛 2+ is reducing while 𝑃𝑏 4+ is oxidising.

87. The stability of +1 oxidation state Al, Ga, In and Tl increases in the sequence (a) Al < Ga < In < Tl (b) Tl < In< Ga < Al

(c) Ib < Tl < Ga < Al (d) Ga < In < Al <Tl 88. Which of the following structure is similar to graphite?

(a)𝐡4

C

(b) 𝐡2𝐻6

(c) BN (d) B

89. Which one f the following molecular hydrides acts as a Lewis acid? (π‘Ž)𝑁𝐻3

(b) 𝐻2

O

(c) 𝐡2𝐻6

(d) 𝐢𝐻4

90. The tendency of 𝐡𝐹3, 𝐡𝐢𝑙3 π‘Žπ‘›π‘‘ π΅π΅π‘Ÿ3 to behave as Lewis acid decreases in the sequence.

(a) 𝐡𝐢𝑙3 > 𝐡𝐹3 > π΅π΅π‘Ÿ3 (b) π΅π΅π‘Ÿ3 > 𝐡𝐢𝑙3 > 𝐡𝐹3 (c) π΅π΅π‘Ÿ3 > 𝐡𝐹3 > 𝐡𝐢𝑙3 (d) 𝐡𝐹3 > 𝐡𝐢𝑙3 > π΅π΅π‘Ÿ3

91. To increase sugar production in sugarcanes, they are sprayed with

(a) IAA (b) Cytokinin (c) Gibberellin (d) Ethylene 92. Antigibberellic hormone is

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93. Coconut milk is a rich source of hormone

(a) IBA (b) Cytokinin (c) Gibberellin (d) ABA

94. Which hormone is responsible for apical growth

(a) IAA (b) ABA (c) GA (d) All

95. Auxins promote

(a) Cell growth and enlargement (b) Cambial activity

(c) Apical dominance (d) All of these

96. One of the these is herbicide

(a) IAA (b) NAA (c) 2, 4-D (d) 𝐺𝐴3

97. Avena curvature test is a bioassay for examining the activity of

(a) Auxins (b) Gibberellins (c) Cytokinins (d) Ethylene 98. Abscisic acid (ABA) promotes

(a) Stem elongation (b) Flower initiation

(c) Triple response (d) Detachment of leaf, flower & fruit 99. Senescence in leaves can be delayed by application of

(a) Indole acetic acid (b) GA (c) Kinetin (d) Ethylene 100. Which one of the following pairs is not correctly matched?

(a) Gibberellic acid – Leaf fall (b) Cytokinin – Cell division

(c) IAA – Cell wall elongation (d) Abscisic acid – Stomatal closure 101. β€œFoolish seedling” disease of rice led to the discovery of

(a) ABA (b) 2, 4-D (c) IAA (d) GA

102. The natural plant hormone isolated from corn karnels and coconut milk is (a) Florigen (b) 𝐺𝐴3 (c) Free auxins (d) Zeatin 103. Induction of cell division and delay in senescence are due to

(a) Gibberellin (b) Cytokinin (c) Auxin (d) Ethylene 104. Auxanometer is used to detect

(a) Respiration (b) Plant growth (c) Transpiration (d) Plant movement 105. Which of the following is a gaseous hormone?

(a) Cytokinin (b) Ethylene

(c) GA (d) Both ethylene &auxin

106. Gibberellin was discovered from

(a) Algae (b) Fungi (c) Bacteria (d) Roots of higher plants 107. Auxin synthesis occurs is

(a) Stem apex (b) Cortex (c) Xylem (d) Phloem

108. A substance that induces dormancy in seed is

(a) ABA (b) GA (c) Thiourea (d) Cytokinin

109. Which of the following is more essential for the breaking of seed dormancy?

(a) Light (b) Heat (c) Cold (d) Moisture

110. One hormone helps in ripening of fruits while the other stimulates closure of stomata. These are respectively

(a) Abscisic acid and auxin (b) Ethylene and abscisic acid

(c) Abscisic acid and ethylene (d) Gibberellic acid and abscisic acid 111. The maximum growth rate occurs in

(a) Stationary phase (b) Lag Phase

(c) Exponential phase (d) Senescent phase

112. Growth inhibiting hormone is

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113. A hormone delaying senescence is

(a) Auxin (b) Cytokinin (c) Gibberellin (d) Ethylene 114. One of the synthetic auxin is

(a) IBA (b) NAA (c) IAA (d) GA

115. Rooting of cutting is promoted by

(a) Gibberellin (b) Cytokinin

(c) Gibberellin and cytokinin (d) IAA and IBA

116. Growth hormone used for speeding up malting in brewery industry is (a) Kinetin (b) Gibberellic acid (c) Auxin (d) Ethylene 117. Abscisic acid is called stress hormone as it

(a) Promotes leaf fall (b) Promotes stomatal closure

(c) Induces flowering (d) Breaks seed dormancy

118. In exponential growth formula β€˜Wt= π‘Š0π‘’π‘Ÿπ‘‘, e denotes

(a) Final size (b) Time of growth

(c) Base of natural logarithm (d) Growth rate

119. In which plant, heterophyllous development occurs due to environment. (a) Coriander (b) Cotton (c) Larkspur (d) Buttercup 120. Vernalisation is

(a) Effect of photoperiods on plant growth

(b) Speeding up ability to flower by low temperature treatment (c) Diurnal photoperiodicity

(d) Growth curve related to light 121. Biting teeth are

(a) Canines (b) Incisors (c) Premolars (d) Molars 122. Proenzymes produced by pancreas are

(a) Trypsinogen and chymotrypsinogen (b) Procarboxypeptidase and trypsinogen

(c) trypsinogen, chymotrypsinogen and procarboxypeptidase (d) Chymotrypsinogen and procarboxypeptidase

123. Marasmus occurs in infants of

(a) 1 -3 months (b) 3 – 6 months (c) 6 – 9 months (d) Below one year 124. Hepato-pancreatic duct opens into the duodenum and carries

(a) Bile (b) Pancreatic juice

(c) Both bile and pancreatic juice (d) Saliva 125. A gland not associated with the alimentary canal is

(a) Pancreas (b) Adrenal (c) Liver (d) Salivary glands 126. Dental formula in human beings is

(a) 3223 3223 (b) 2123 2123 (c) 1232 1232 (d) 2233 2233 127. HCI is secreted by which of the following cells of stomach

(a) Parietal cells (Oxyntic cells) (b) Peptic cells

(c) Goblet cell (d) Chief cells

128. How many human teeth appear twice during the life span of an individual?

(a) 16 (b) 32 (c) 22 (d) 20

129. pH of saliva is

(a) 6.8 (b) 8 (c) 7 (d) 9.5

130. Food and air pathways are divided at

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131. Which one performs emulsification of fat

(a) Lipase (b) Bile salts (c) Protease (d) Cellulose 132. Number of milk teeth is

(a) 52 (b) 32 (c) 20 (d) 12

133. Lactose can be hydrolysed into

(a) Glucose + Fructose (b) Fructose only

(c) Glucose + galactose (d) Glucose only 134. Protein deficiency leads to

(a) Kwashiorkor (b) Cretinsim

(c) Marasmus (d) Both A and C

135. Pepsinogen is secreted by

(a) Chief cells (b) Oxyntic cells (c) Parietal cells (d) Mast cells 136. Glisson’s capsules are present in

(a) Lung (b) Liver (c) Kidney (d) Stomach

137. Jaundice is a disorder of.

(a) Skin & eyes (b) Excretory system (c) Digestive system (d) Circulatory system 138. Bile salts in bile help in_____ of fats.

(a) Dehydration (b) Deglutition (c) Peristalsis (d) Emulsification 139. Salivary amylase, a digestive enzyme begins digestion of

(a) Protein (b) Carbohydrates (c) Fats (d) All of these 140. Succusentericus is secreted by…….

(a) Auerbach’s plexus (b) Brunner’s glands

(c) Peyer’s patches (d) Crypts of Lieberkuhn

141. The diagram of large intestine of man is given below. Identify the parts labeled a,b,c,d,e,f

(a) a = Sigmoid, b = Vermiform appendix, c = Ascnding colon, d = Transverse colon, e = Descending colon, f = Caecum

(b) a = Caecum, b = Vermiform appendix, c = Sigmoid, d = Ascending colon, e = Transverse colon, f = Descending colon

(c) a = Caecum, b = Vermiform appendix, c = Ascending colon, d = Transverse colon, e = Descending colon, f = Sigmoid

(d) a = Sigmoid, b = Vermiform appendix, c = Descending colon, d = Transverse colon, e = Ascending colon, f = Caecum

142. Outermost layer in the wall of alimentary canal is

(a)Muscularis (b) Serosa (c) Submucosa (d) Mucosa 143. Ptyalin is

(a) Rennin (b) Pepsin (c) Chymotrypsin (d) Salivary amylase 144. Peristalsis occurs in

(a) Blood vessels (b) Alimentary canal

(c) Ureter (d) Urethra

145. How many pairs of salivary glands are there in humans

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146. In humans, the number of premolar teeth in each jaw half is

(a) 2 (b) 3 (c) 4 (d) 6

147. What are micelles during absorption

(a) Small glycerol molecules (b) Small droplets of fatty acids (c) Very small fat droplets (d) Large fat molecules

148. Chylomicrons are

(a) Small fat globules coated with protein (b) Aerobic microbes

(c) Protein molecules coated with fat (d) Small granules found gastric juice

149. The initial step in digestion of milk in humans is carried out by

(a) Trypsin (b) Rennin (c) Pepsin (d) Lipase 150. The enzyme that is not present in succusentericus is

(a) Maltase (b) Ptyalin (c) Nucleosidase (d) Lipase 151. Respiration denotes

(a) Breathing (b) External respiration

(c) Internal respiration (d) All the above 152. Cell surface gaseous exchange occurs in

(a) Earthworm (b) Insect (c) Sponge (d) Mollusc 153. What is correct about lung lobes

(a) Right 3 lobes, left 2 lobes (b) Right 2 lobes, left 3 lobes (c) Right 3 lobes, left 3 lobes (d) Right 2 lobes, left 2 lobes 154. VC + RV is equal to

(a) Inspiratory capacity (b) Expiratory reserve volume (c) Functional residual capacity (d) Total lung capacity

155. Inflammation of bronchi and bronchioles results in

(a) Bronchitis (b) Asthma (c) Emphysema (d) Fibrosis 156. Lungs are enclosed in.

(a) Pericardium (b) Peritoneum (c) Pleural membrane (d) None of these

157. In breathing movements, air volume can be estimated by

(a) Stethoscope (b) Hygrometer

(c) Sphygmomanometer (d) Spirometer

158. In blood 𝐢𝑂2 is transported mostly as

(a) Sodium carbonate (b) Carboxyhaemoglobin

(c) Bicarbonate (d) 𝐢𝑂2 as such

159. Residual volume is

(a) Greater than vital capacity (b) Greater than tidal volume

(c) Lesser than tidal volume (d) Greater than inspiratory volume 160. Vital capacity of lungs is

(a) TV + IRV + RV (b) TV + IRV + ERV

(c) TV + ERV (d) IRV + ERV

161. In alveolar air, the partial pressure of 𝐢𝑂2 is

(a) 40 mm of Hg (b) 44 mm of Hg

(c) 46 mm of Hg (d) 42 mm of Hg

162. Lungs have a large number of narrow tubes called

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(a) 6000 – 8000 (b) 500 (c) 2500 – 3000 (d) 1000 -1100 164. The vital capacity of human lung is equal to

(a) 500 ml (b) 2300 ml (c) 4600 ml (d) 5800 ml 165. About 97% of 𝑂2 is transported by RBC. The remaining 3% is

(a) Dissolved in plasma and transported (b) Remain in lungs

(c) Attached to cell membranes (d) Inside the mitochondria

166. How many molecules of oxygen are carried by one molecule of haemoglobin?

(a) 2 (b) 4 (c) 6 (d) 8

167. The gas exchange surface in an earthworm is

(a) Tracheae (b) Gills (c) Skin (d) Ctenidia

168. What percentage of 𝐢𝑂2 is transported by RBCs

(a) 70% (b) 20.25% (c) 97% (d) 7%

169. Alveoli occur in

(a) Lungs (b) Brain (c) Liver (d) Kidney

170. Expiratory capacity of a person is

(a) Tidal volume (b) Expiratory reserve volume (c) Residual volume

(d) Sum of tidal volume & expiratory reserve volume

171. After forceful inspiration, the amount of air that can be breathed out by maximum forced expiration is equal to

(a) TV + RV + ERV (b) IRV + RV + ERV

(c) IRV + RV + ERV (d) IRV + ERV + TV + RV

172. In the labels a, b, c and d of respiratory system select the option with correct identification and main function and/or characteristic

(a) d-Lower end of lungs – Diaphragm pulls it down during inspiration

(b) a – Trachea – Long tube supported by complete cartilaginous rings for conducting inspired air

(c) b – pleural membrane – Surround ribs on both sides to provide cushion against rubbing

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173. Identify P and Q in the figure and mention the process that takes place

(a) P-diaphragm relaxed, Q-thoracic cavity increases = Inhalation (b) P-diaphragm contracted, Q-thoracic cavity decreases = Exhalation (c) P-diaphragm relaxed, Q-thoracic cavity reduces = Exhalation (d) P-diaphragm contracted, Q-thoracic cavity increases = Exhalation

174. Name the chronic respiratory disorder caused mainly by cigarette smoking (a) Respiratory alkalosis (b) Emphysema

(c) Asthma (d) Respiratory acidosis

175. The partial pressure of oxygen in the alveoli of lungs

(a) Less than that of 𝐢𝑂2 (b) Equal to that in the blood (c) More than that in the blood (d) Less than that in the blood 176. Asthma may be attributed to

(a) Accumulation of fluid in the lungs (b) Bacterial infection of the lungs

(c) Allergic reaction of mast cells in the lungs (d) Inflammation of the trachea

177. The respiratory quotient (RQ) or respiratory ratio is (a) 𝑅𝑄 = π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝑂2 π‘’π‘£π‘œπ‘™π‘£π‘’π‘‘ π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝐢𝑂2 π‘π‘œπ‘›π‘ π‘’π‘šπ‘’π‘‘ (b) 𝑅𝑄 = π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝑂2π‘π‘œπ‘›π‘ π‘’π‘šπ‘’π‘‘ π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝐢𝑂2 π‘’π‘£π‘œπ‘™π‘£π‘’π‘‘ (c) 𝑅𝑄 = π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝐢𝑂2 π‘π‘œπ‘›π‘ π‘’π‘šπ‘’π‘‘ π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝑂2 π‘’π‘£π‘œπ‘™π‘£π‘’π‘‘ (d) 𝑅𝑄 = π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝐢𝑂2 π‘’π‘£π‘œπ‘™π‘£π‘’π‘‘ π‘‰π‘œπ‘™π‘’π‘šπ‘’ π‘œπ‘“ 𝑂2 π‘π‘œπ‘›π‘ π‘’π‘šπ‘’π‘‘

178. Exchange of respiratory gases between an organism and its environment is called

(a) Glycolysis (b) External respiration

(c) Internal respiration (d) Cellular respiration 179. In oxidative phosphorylation, one FAD𝐻2 produces

(a) 3 ATP (b) 4 ATP (c) 2 ATP (d) One ATP 180. Respiratory quotient (RQ) is represented by……

References

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