Questions

Q:

Organisms that use light to prepare food are known as _____.

A) Autotrophs B) Heterotrophs
C) Omnivores D) Decomposers
 
Answer & Explanation Answer: A) Autotrophs

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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

 

to break up into small parts as the result of impact or decay

 

A) to disintegrate B) disharmony
C) to disinherit D) to denigrate
 
Answer & Explanation Answer: A) to disintegrate

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Q:

Name the device used to connect computers for communication via telephone lines..

A) HUB B) Switch
C) Repeater D) MODEM
 
Answer & Explanation Answer: D) MODEM

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Q:

In the gamma decay of a nucleus

A) the mass number of the nucleus changes whereas its atomic number does not change B) the mass number of the nucleus does not change whereas its atomic number changes
C) both the mass number and the atomic number of the nucleus change D) neither the mass number nor the atomic number of the nucleus changes
 
Answer & Explanation Answer: D) neither the mass number nor the atomic number of the nucleus changes

Explanation:

The emission of gamma rays does not alter the number of protons or neutrons in the nucleus but instead has the effect of moving the nucleus from a higher to a lower energy state (unstable to stable)

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Q:

An Odometer is an instrument used to measure ____ in automobiles.

A) direction B) distance
C) odour D) speed
 
Answer & Explanation Answer: B) distance

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Q:

A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 

A)  25 B)  37.5
C)  50 D)  75
 
Answer & Explanation Answer: D)  75

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Q:

First man to go into space was

A) Roald Amundsen B) Reynalt Mayor
C) Robert Peary D) Major Yuri Gagarin
 
Answer & Explanation Answer: D) Major Yuri Gagarin

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Q:

Ocimum tenuiflorum is the scientific name of ___________.

A) Neem B) Mango
C) Babul D) Tulsi
 
Answer & Explanation Answer: D) Tulsi

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