Aptitude Examination Sample Questions with Answers for Recruitment of All Government Organisation's Jobs (005)

1.The standard scale of temperature is?
A. Gas scale
B. Mercury scale
C. Kelvin scale
D. Celsius scale
Ans: C

2.Beats is a result of the phenomenon of?
A. Resonance
B. Interference
C. Reflection
D. Echo
Ans: B

3.The ratio of tangential stress to velocity gradient is?
A.Viscosity
B. Surface tension
C. Young's modulus
D. None of the above
Ans: A

4.An external resistance R is connected to a cell of internal resistance r, the maximum current flows in the external resistance when?

A. R<R< font>
B. R>r
C. R=r
D. R=any value
Ans: C

5.A bomb of mass 16 kg at rest explodes into two pieces of masses of 4 kg and 12 kg. The velocity of the 12 kg mass is 4 ms-1. The kinetic energy of the other mass is?

A. 96 J
B. 144 J
C. 288 J
D. 192 J
Ans: C



6.Electro cardio graph is used to study?
A. Blood pressure
B. Function of lungs
C. Function of heart
D. Function of liver
Ans: C

7.A force of 20N acts on a body of mass 2 kg initially at rest. Find the work done in 2 seconds?
A. 400J
B. 20J
C. 10J
D. 5J
Ans: A

8.A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulating handles?

A. The charge on the capacitor increases.
B. The voltage across the plates increases.
C. The capacitance increases.
D. The electrostatic energy stored in the capacitor decreases.
Ans: B

9.The displacement of a body is directly proportional to the square of time. Its acceleration?
A. Constant
B. Decreases
C. Increases
D. Zero
Ans: A

10.A particle is moving eastward with a velocity 5 m/sec. In 10 seconds, the velocity changes to 5 m/s northward. The average acceleration in this time is?

A. 122m/sec2 towards northeastern
B. 12m/sec2 towards northwest
C. 12m/sec2 towards northwest
D. 12m/sec2 towards northeast
Ans: D

11.The sky is blue in colour because of?
A. The moisture present in the air
B. The scattering of light by dust particles or air molecules
C. Combination of various lights producing blue colour
D. All the above
Ans: B

12.The wire having a black plastic cover is a?
A. Live wire
B. Neutral wire
C. Earth wire
D. None of these
Ans: A

13.A player caught a cricket ball of mass 150 g moving at a rate of 20 m/s. If the catching process is completed in 0.1 s, the force of the blow exerted by the ball on the hand of the player is equal to?

A. 300 N
B. 150 N
C. 3 N
D. 30 N
Ans: D

14.What is the audible range of the average human ear?
A. 20 Hz to 2000Hz
B. 40 Hz to 4000Hz
C. 20 Hz to 20000Hz
D. 40 Hz to 40000Hz
Ans: C

15.The blue colour of the sky is explained by?
A. polarization
B. reflection
C. scattering
D. refraction
Ans: C

16.An ice ball floats into a water tank. when the ice melts, the water level?
A. Rises
B. Does not change
C. Falls down
D. First increases then decreases
Ans: B

17.The capacitive reactance of a condenser in AC circuit is?
A. wc
B. 1/wc
C. c/w
D. w/c
Ans: B

18.The sun remains visible for some time after it actually sets below the horizon. This happens due to?
A. Atmosphere refraction
B. Scattering of light
C. Dispersion
D. Persistence of vision
Ans: A

19.Light year is the unit of?
A. Distance
B. Time
C. force
D. solar mass
Ans: A

20.A charge of 60 c passes through an electric lamp in 2 minutes. then the current in the lamp is?
A. 30 A
B. 1 A
C. 0.5 A
D. 5 A
Ans: C

21.Ponds looks shallow because of?
A. Reflection
B. Refraction
C. Diffusion
D. Dispersion
Ans: B

22.Which of the following can't be used to make a solar cell?
A. silicon
B. platinum
C. gallium
D. germanium
Ans: B

23.A body moving with uniform acceleration, crosses two fixed points A & B with velocities of 20 m/s and 30m/s respectively. The velocity of the body when it is at midpoint of A & B is?

A. 24 m/s
B. 24.5 m/s
C. 25 m/s
D. 25.5 m/s
Ans: D

24.An iron ball and a wooden ball of the same mass are released from a height "h" in air. Neglecting the viscous drag of air?

A. The iron ball will hit the ground earlier.
B. The wooden ball will hit the ground earlier.
C. Both will hit the ground at the same time .
D. depends upon the place.
Ans: C

25.The coefficient of viscosity for hot air is?
A. Same as the coefficient of viscosity for cold air
B. Smaller than the coefficient of viscosity for cold air
C. Greater than the coefficient of viscosity for cold air
D. Zero
Ans: C

26.Which of the following is not an essential condition for interference?
A. The two interfering waves must be propagated in almost the same direction or
B. The waves must have the same time period and wavelength
C. Amplitude of the two waves should be the same
D. The interfering beams of light must originate from the same source
Ans: C