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:

Which of the following vitamins contain nitrogen?

A) Vitamin A	B) Vitamin B
C) Vitamin C	D) Vitamin D

Answer & Explanation Answer: B) Vitamin B

Explanation:

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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 itby selecting the appropriate option.

There are _____ books on computer science in your school library, so you need to purchase them from the market.

A) a few	B) a little
C) few	D) the few

Answer & Explanation Answer: C) few

Explanation:

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Q:

UV rays coming from Sun, majorly causes which cancer?

A) Lungs cancer	B) Liver cancer
C) Mouth cancer	D) Skin cancer

Answer & Explanation Answer: D) Skin cancer

Explanation:

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Q:

A fresh egg when placed in salt water will

A) sink and go to the bottom	B) sink but will not go to the bottom
C) float	D) burst

Answer & Explanation Answer: C) float

Explanation:

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Q:

If the velocity of a body becomes two times its initial velocity, its kinetic energy becomes n times its initial kinetic energy. What is the value of n?

A) 4	B) 6
C) 1/2	D) 3

Answer & Explanation Answer: A) 4

Explanation:

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Q:

In April 2017, Chief Minister Amarinder Singh banned inclusion of names of Ministers and MLA's on Plaques and Foundation Stones in which state?

A) Maharashtra	B) Punjab
C) Himachal Pradesh	D) Uttar Pradesh

Answer & Explanation Answer: B) Punjab

Explanation:

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Q:

Bollywood actress Pryanka Chopra won the Favourite Actress award at the People's Choice awards 2016, for her leading role in the American TV thriller series ___.

A) Secrets and Lies	B) The Middle
C) Quantico	D) Mistress

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