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Q:

Molecular clocks are based on the idea that _____.

A) On average neutral mutations arise at a constant rate B) Directional selection occurs at a constant rate
C) Mutations occur once every generation D) Molecules resonate at a certain frequency that can be measured
 
Answer & Explanation Answer: C) Mutations occur once every generation

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Q:

Which of the following compounds has a double bond?

A) Acetylene B) Ethene
C) Ethane D) Methane
 
Answer & Explanation Answer: B) Ethene

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Filed Under: Chemistry
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Q:

In each of the questions, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/Phrase and click the button corresponding to it.

To clip one's wings

A) To stop one from flying B) To trim the leaves
C) To deprive one of power D) To hurt a bird
 
Answer & Explanation Answer: C) To deprive one of power

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Q:

Who discovered Fullerene (an allotrope of carbon)?

A) K Scheele B) Richard Smalley
C) Faraday D) Heisenberg
 
Answer & Explanation Answer: B) Richard Smalley

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Q:

Stainless steel was invented by

A) William Howard Livens B) Joseph Aspdin
C) Harry Brearley D) James Dyson
 
Answer & Explanation Answer: C) Harry Brearley

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Q:

Akbar (1556–1605 AD) was the ruler of which dynasty?

A) Nanda B) Maurya
C) Mughal D) Haryanka
 
Answer & Explanation Answer: C) Mughal

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Filed Under: Indian History
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Q:

Name the character in Mahabharat who was blessed with the 'divine vision' to see the Mahabharata battle and explain it scene by scene to the blind king Dhritarashtra.

A) Sanjaya B) Dussala
C) Vidura D) Balarama
 
Answer & Explanation Answer: A) Sanjaya

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Q:

Acceleration due to gravity on a planet decreases with ______.

A) decrease in radius of the planet B) increase in mass of the planet
C) decrease in mass of the body D) increase in altitude from surface of the planet
 
Answer & Explanation Answer: D) increase in altitude from surface of the planet

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Filed Under: Physics
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