PSI Pre 2013

A. 5, 7, 9

B. 3, 5, 7

C. 2, 3, 5

D. 7, 9, 11

A.

B.

C.

D.

A. 1/5

B. -1/5

C. 2/5

D. -2/5

A. 24

B. 22

C. 20

D. 18

A. 6 : 4 : 3

B. 2 : 3 : 4

C. 4 : 3 : 2

D. 3 : 4 : 2

A. 24

B. 5

C. 6

D. 12

A. 50

B. 22

C. 1536

D. 1236

A. 2

B. 0

C. -1

D. 1

A. 1.93

B. 1

C. 2

D. 2.07

A. 82

B. 80

C. 75

D. 85

A. Nuclear fissio

B. Nuclear fusion

C. Chemical reaction

D. Motion of electrons

A. Electricity is extracted from water

B. Kinetic energy possessed by stored water is converted into electricity 

C. Water is converted into steam to turn turbines and produce electricity 

D. Potential energy possessed by stored water is converted into electricity

A. Converts potential energy to kinetic energy

B. Converts kinetic energy to potential energy

C. otential energy remains constant

D. Kinetic energy remains constant

A.

B.

C.

D.

A. Only statement (A) is true.

B. Only statement (B) is true.

C. Both (A) and (B) are true.

D. Neither (A) nor (B) is true.

A. Vacuum is required.

B. Medium (physical object/matter) is required.

C. Particles of the medium travel from the source to the listener.

D. None of the above.

A. Only statement (A) is True

B. Only statement (B) is true

C. Both (A) and (B) are true

D. Neither (A) nor (B) is true

A. There is no atmosphere at high altitude.

B. Scattering of light does not take place.

C. Both (1) and (2) are correct.

D. None of the above

A.

B.

C.

D.

A. Solidification 

B. Liquidification

C. Evaporation

D. Sublimation