Questions

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

Explanation:
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Q:

The major ingredient of leather is

A) Collagen B) Carbohydrate
C) Nucleic acid D) Polymer
 
Answer & Explanation Answer: A) Collagen

Explanation:

Leather is a durable and flexible material created by tanning animal rawhide and skins. The major ingredient of leather is Collagen.

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Q:

There are total _________ parliamentary seats (Rajya Sabha constituency) in Maharashtra.

A) 11 B) 19
C) 10 D) 1
 
Answer & Explanation Answer: B) 19

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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:

In Microsoft Word, _____ is a position we set for placing and aligning text on a page.

A) Standard tool bar B) View Buttons
C) Formatting tool bar D) Tab stop
 
Answer & Explanation Answer: D) Tab stop

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Q:

Anions are formed by _____.

A) losing of electrons B) gaining of electrons
C) gaining of neutrons D) losing of neutrons
 
Answer & Explanation Answer: B) gaining of electrons

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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.

At somebody's expense

A) Paid for by someone. B) To blame a crime on someone else.
C) The unlucky persons who lose a race. D) If one person benefits it is always at the loss of another.
 
Answer & Explanation Answer: A) Paid for by someone.

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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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