Questions

Q:

Particulates (< 1 μm size) remaining suspended in air indefinitely and transported by wind currents are called

A) Mists B) Fumes
C) Aerosols D) Smoke
 
Answer & Explanation Answer: C) Aerosols

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Q:

What will be the value of the kinetic energy (Ek) of a moving body with mass m, if its speed is doubled from v to 2v?

A) 1/2 Ek B) 4 Ek
C) There will be no change in Ek D) 2 Ek
 
Answer & Explanation Answer: B) 4 Ek

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Q:

An earthquake of magnitude _________________ on Richter scale has thousand times more destructive energy than an earthquake of magnitude 4.

 

A) 5 B) 7
C) 6 D) 8
 
Answer & Explanation Answer: C) 6

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Q:

Friction is caused by the ______________ on the two surfaces in contact.

A) irregularities B) smoothness
C) densities D) gaps
 
Answer & Explanation Answer: A) irregularities

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Q:

In _____________ motion of a body its velocity varies with time.

A) uniform B) linear
C) equilibrium D) non-uniform
 
Answer & Explanation Answer: D) non-uniform

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Q:

Which of the following refers to the number of pixels per inch, printed on a page?

A) Print Margin B) Resolution
C) Filter D) Colour mode
 
Answer & Explanation Answer: B) Resolution

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Q:

In 1981, ISRO launched India's first geostationary satellite called -

A) Aryabhata B) APPLE
C) Bhaskara II D) INSAT 1B
 
Answer & Explanation Answer: B) APPLE

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Q:

Which Indian nuclear scientist is currently the chairman of the Atomic Energy Commission of India?

A) R. Murugesan B) A.S. Kiran Kumar
C) Madhavan Nair   D) Sekhar Basu
 
Answer & Explanation Answer: D) Sekhar Basu

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