Questions

Q:

Name the committee appointed in 1986 by Rajiv Gandhi on "Revitalisation of Panchayti Raj Institution for Democracy & Development".

A) Ashok Mehta Committee B) L M Singhvi Committee
C) G.V.K. Rao Committee D) Balwant Rai Mehta Committee
 
Answer & Explanation Answer: B) L M Singhvi Committee

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Q:

Which is the brightest star in our night sky?

A) Canopus B) Sirius A
C) Vega D) Spica
 
Answer & Explanation Answer: B) Sirius A

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Q:

One step in the production of hydroelectric power involves _____.

A) falling water that turns a turbine  B) electric current flowing across a dam
C) hot water from under the ground D) tides that pour through a barrier dam
 
Answer & Explanation Answer: A) falling water that turns a turbine 

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Q:

The theory behind stars twinkling is that

A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time B) The intensity of light emitted by them changes with time
C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere D) The distance of the stars from the earth changes with time
 
Answer & Explanation Answer: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time

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Q:

The rate of change of velocity is called

A) Momentum B) Speed
C) Acceleration D) Force
 
Answer & Explanation Answer: C) Acceleration

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Q:

What is the heat generated (in J) in a heating element of resistance 800 Ω when a current of 0.2 A passes through it for 40 seconds?

 

A) 6400   B) 1280  
C) 640   D) 3200
 
Answer & Explanation Answer: B) 1280  

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Q:

An object of 5.0 kg is raised through a height of 2.0m. The work done in the process is

A) 49 J B) 10 J
C) 19.6 J D) 98 J
 
Answer & Explanation Answer: D) 98 J

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Q:

Mirages are formed primarily due to ___ of light.

A) Reflection B) Diffusion
C) Refraction D) Scattering
 
Answer & Explanation Answer: C) Refraction

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