VOCLET 2014 Question Answer Physics_chemestry
PHYSICS and CHEMISTRY-
1. Kirchoff’s current law obeys the principle of conservation of – A) Charge
2. Critical angle of light passing from glass to air is minimum for- D) violet
3. S.I. unit of illuminance is – D) lux
4. A light body A and a heavy body B have equal linear momentum. The K.E. of the body A- B) greater than that of B
5. If a force F is applied on a body and it moves with a velocity v, the power will be- C) Fxv
6. A boat which has a speed 5km per hour in still water crosses a river of which width 1 km along the shortest possible path in 20 minutes. The velocity of the river water in km per hour is – D) v34
7. Which process of transmission of heat does need gravity?- D) None of the above
8. The apparent weight of a floating body is – D) equal to zero.
9. A force (5t2-5) N is applied on a body of mass of 5 kg. The initial speed is 2 m/s. The velocity of body in m/s after 3 seconds is – I think none of the given option is right.
10. The average emf induced in a coil in which a current changes from 2A to 4A in 0.06s is 8v. The self inductance of the coil is – B) 0.24H
11. An ammeter should have very low resistance- D) so that it may not change the value of current in its presence.
12. A current loop placed in a magnetic field behaves like a – A) Magnetic dipole.
13. A piece of wire of resistance R is stretched uniformly so that its length is doubles. The resistance of the wire will be – A) 2R
14. Action and reaction do not balance each other because they – B) do not act on the same body.
15. The density of ice is x gm/cc and that of water is y gm/cc. What is the change in volume when m gm of ice melts?- C) m (1/x -1/y)
16. The ratio of the luminous intensities of two point source of luminous flux 45 lumen and 75 lumen is – B) 3:5
17. Which of the following is a self adjusting force?- B) Rolling friction.
18. In the lower fixed point and upper fixed point of a thermometer be marked 20 and 140 respectively. What reading would this thermometer indicate for a temperature of 92 Degree F?- A) 60 Degree.
19. A ray of light passes from vacuum into a medium of refractive index u. The reflective ray and the refracted ray are at right angle. The angle of incidence is – A) tan-1 u
20. The symbols Y,K and n represent the young’s modules, bulk modules and rigidity modulus of the material of a body. If n=3K then – ***B) Y= 3.5
21. How high can a human through a ball if he can throw it with the initial velocity 90 km/hr?- C) 31.89m
22. When a solid metallic sphere is heated, the largest percentage increase occurs in its- C) volume
23. Henry(H) is equivalent to – A) wb/amp
24. When light enters in a lens, it undergoes a change in – D) wavelength and velocity
25. The magnetic field of induction B at the center of a circular coil carrying current I and radius of the coil r is – A) B=u0I/2r
26. Grease is- C) Semi solid lubricant.
27. Name the most commonly used, starting material for preparation of Picric Acid- B) Phenol
28. Which one is thermosetting plastic- A) Bakelite.
29. Correct relation between atomic weight (A) equivalent weight (E) and valency (V) is- B) E=A/V
30. Which is not related to colloid solution?- D) Brownian motion
31. The raw materials to prepare DDT are- D) Chloral, Chloro-benzene, concentrated H2SO4
32. Chemical name of oil of wintergreen is – B) Methyl Salicylate
33. Molarity of tribasic acid is 3. Normality of the acid is – **(Normality of a tribasic acid is 3 times of their Molarity. According to this equation Normality should be 3 x 3=9)
34. Octane number of iso-octane is – A) 100
35. Hardness of water is express in the unit of – A) ppm
36. Which of the following is used as fuel in jet engines?- D) Power alcohol.
37. Which of the following is not a polymer?- B) DNA
38. Zinc emulsion is used in – C) Corrosion Prevention
39. Corrosion of metal occurs mainly due to – C) Oxidation.
40. Which metal is used for galvanization of iron?- D) Zinc.
41. Coagulant used for purification of water is – B) Alum
42. Which of the following compound contains a triple bond?- A) C2H2
43. Which one has lowest boiling point?- C) Gasoline.
44. Which variety of coal has highest calorific value?- B) Anthracite.
45. Which one has same equivalent weight and molecular weight?- D) H2C2O4
46. Which is the monomer of synthetic rubber?- D) Isoprene.
47. Colloidal particles have average diameter- B) 10-5 to 10-7 cm
48. What is the pH value of 1(N) NaOH pollution?- D) 14
49. What is the volume of 88 grams of CO2 at STP?- C) 44.8 liter
50. Which one is used for softening of hard water?- C) Zeolite.
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1. Kirchoff’s current law obeys the principle of conservation of – A) Charge
2. Critical angle of light passing from glass to air is minimum for- D) violet
3. S.I. unit of illuminance is – D) lux
4. A light body A and a heavy body B have equal linear momentum. The K.E. of the body A- B) greater than that of B
5. If a force F is applied on a body and it moves with a velocity v, the power will be- C) Fxv
6. A boat which has a speed 5km per hour in still water crosses a river of which width 1 km along the shortest possible path in 20 minutes. The velocity of the river water in km per hour is – D) v34
7. Which process of transmission of heat does need gravity?- D) None of the above
8. The apparent weight of a floating body is – D) equal to zero.
9. A force (5t2-5) N is applied on a body of mass of 5 kg. The initial speed is 2 m/s. The velocity of body in m/s after 3 seconds is – I think none of the given option is right.
10. The average emf induced in a coil in which a current changes from 2A to 4A in 0.06s is 8v. The self inductance of the coil is – B) 0.24H
11. An ammeter should have very low resistance- D) so that it may not change the value of current in its presence.
12. A current loop placed in a magnetic field behaves like a – A) Magnetic dipole.
13. A piece of wire of resistance R is stretched uniformly so that its length is doubles. The resistance of the wire will be – A) 2R
14. Action and reaction do not balance each other because they – B) do not act on the same body.
15. The density of ice is x gm/cc and that of water is y gm/cc. What is the change in volume when m gm of ice melts?- C) m (1/x -1/y)
16. The ratio of the luminous intensities of two point source of luminous flux 45 lumen and 75 lumen is – B) 3:5
17. Which of the following is a self adjusting force?- B) Rolling friction.
18. In the lower fixed point and upper fixed point of a thermometer be marked 20 and 140 respectively. What reading would this thermometer indicate for a temperature of 92 Degree F?- A) 60 Degree.
19. A ray of light passes from vacuum into a medium of refractive index u. The reflective ray and the refracted ray are at right angle. The angle of incidence is – A) tan-1 u
20. The symbols Y,K and n represent the young’s modules, bulk modules and rigidity modulus of the material of a body. If n=3K then – ***B) Y= 3.5
21. How high can a human through a ball if he can throw it with the initial velocity 90 km/hr?- C) 31.89m
22. When a solid metallic sphere is heated, the largest percentage increase occurs in its- C) volume
23. Henry(H) is equivalent to – A) wb/amp
24. When light enters in a lens, it undergoes a change in – D) wavelength and velocity
25. The magnetic field of induction B at the center of a circular coil carrying current I and radius of the coil r is – A) B=u0I/2r
26. Grease is- C) Semi solid lubricant.
27. Name the most commonly used, starting material for preparation of Picric Acid- B) Phenol
28. Which one is thermosetting plastic- A) Bakelite.
29. Correct relation between atomic weight (A) equivalent weight (E) and valency (V) is- B) E=A/V
30. Which is not related to colloid solution?- D) Brownian motion
31. The raw materials to prepare DDT are- D) Chloral, Chloro-benzene, concentrated H2SO4
32. Chemical name of oil of wintergreen is – B) Methyl Salicylate
33. Molarity of tribasic acid is 3. Normality of the acid is – **(Normality of a tribasic acid is 3 times of their Molarity. According to this equation Normality should be 3 x 3=9)
34. Octane number of iso-octane is – A) 100
35. Hardness of water is express in the unit of – A) ppm
36. Which of the following is used as fuel in jet engines?- D) Power alcohol.
37. Which of the following is not a polymer?- B) DNA
38. Zinc emulsion is used in – C) Corrosion Prevention
39. Corrosion of metal occurs mainly due to – C) Oxidation.
40. Which metal is used for galvanization of iron?- D) Zinc.
41. Coagulant used for purification of water is – B) Alum
42. Which of the following compound contains a triple bond?- A) C2H2
43. Which one has lowest boiling point?- C) Gasoline.
44. Which variety of coal has highest calorific value?- B) Anthracite.
45. Which one has same equivalent weight and molecular weight?- D) H2C2O4
46. Which is the monomer of synthetic rubber?- D) Isoprene.
47. Colloidal particles have average diameter- B) 10-5 to 10-7 cm
48. What is the pH value of 1(N) NaOH pollution?- D) 14
49. What is the volume of 88 grams of CO2 at STP?- C) 44.8 liter
50. Which one is used for softening of hard water?- C) Zeolite.
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