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Q:

Polynucleotide chain of DNA contains

A) a nitrogenous base, deoxyribose sugar and phosphate group B) a nitrogenous base, ribose sugar and phosphate group
C) deoxyribose sugar, ribose sugar and phosphate group D) a nitrogenous base and phosphate group only
 
Answer & Explanation Answer: A) a nitrogenous base, deoxyribose sugar and phosphate group

Explanation:

The two DNA strands are called polynucleotidesbecause they are composed of simpler monomer units called nucleotides. Eachnucleotideis composed of one of four nitrogen-containingnucleobases (cytosine, guanine, adenine or thymine), a sugar called deoxyribose, and a phosphate group.

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
In a jiffy

A) Fail to win appreciation B) In an appropriate manner
C) Something that is done very quickly D) To fall in love
 
Answer & Explanation Answer: C) Something that is done very quickly

Explanation:
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Q:

Which of the following gases is heavier than oxygen?

A) Carbon dioxide B) Ammonia
C) Methane D) Helium
 
Answer & Explanation Answer: A) Carbon dioxide

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Filed Under: Chemistry
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Q:

Which of the following elements has the lowest melting point?

A) Iron B) Nitrogen
C) Iodine D) Lead
 
Answer & Explanation Answer: B) Nitrogen

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Filed Under: Chemistry
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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

 

You have to take these medicines.

A) These medicines you have to take. B) You have took these medicines.
C) These medicines have to be taken by you. D) Taking of these medicines has to be done by you.
 
Answer & Explanation Answer: C) These medicines have to be taken by you.

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Father was upset (1)/when he found that (2)/you are not there.(3)/No Error (4)

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

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Q:

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

At night, the hungry orphan would sneak into the kitchen and __________ tiny amounts of food.

A) prefer B) lifter
C) differ D) pilfer
 
Answer & Explanation Answer: D) pilfer

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Q:

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) Threashing B) Thrasheing
C) Threasheing D) Thrashing
 
Answer & Explanation Answer: D) Thrashing

Explanation:
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