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Q:

The work done by centripetal force is ______.

A) positive B) zero
C) negative D) unity
 
Answer & Explanation Answer: B) zero

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Filed Under: Physics
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Q:

What is the noise level of normal conversation?

A) About 60 dB B) About 70 dB
C) About 80 dB D) About 90 dB
 
Answer & Explanation Answer: A) About 60 dB

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Q:

Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.

A) 1800 B) 36
C) 900 D) 72
 
Answer & Explanation Answer: D) 72

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Q:

Marble comes under which category of rocks?

A) Sedimentary B) Igneous
C) Metamorphic D) None of these
 
Answer & Explanation Answer: C) Metamorphic

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Q:

Which layer of the earth's atmosphere contains the ozone layer?

A) Troposphere B) Mesosphere
C) Ionosphere D) Stratosphere
 
Answer & Explanation Answer: D) Stratosphere

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Q:

A level of atmosphere which is composed partly of electrons and positive ions is called

A) Troposphere B) Ionosphere
C) Stratosphere D) Mesosphere
 
Answer & Explanation Answer: B) Ionosphere

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Q:

Aung San Suu Kyi is the

A) Prime Minister of Myanmar B) President of Myanmar
C) Foreign Minister of Myanmar D) Home Minister of Myanmar
 
Answer & Explanation Answer: D) Home Minister of Myanmar

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Filed Under: Indian Politics

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Q:

Potato is a ?

A) Root B) Stem
C) Bud D) Fruit
 
Answer & Explanation Answer: B) Stem

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Filed Under: General Science

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