Q:

Which one of the followingis notan allotrope of carbon?

A) Coal	B) Diamond
C) Graphite	D) Graphene

Answer & Explanation Answer: A) Coal

Explanation:

Allotropy is the property of some chemical elements to exist in two or more different forms, or allotropes, when found in nature. There are several allotropes of carbon like diamond, graphite, graphene, fullerene, etc.Coal is not an allotrope of carbon because it is not 100% carbon. It contains lot of silica, sulphur and other compounds of carbon apart from carbon.

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Q:

Which one of the following is not a borderline element?

A) Boron	B) Silicon
C) Polonium	D) Bismuth

Answer & Explanation Answer: D) Bismuth

Explanation:

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Q:

Which of the following vitamins help in the absorption of calcium?

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

Answer & Explanation Answer: B) Vitamin D

Explanation:

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Filed Under: Biology
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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

Explanation:

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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'.

I've been trying(A)/to catch you as(B)/ you left college.(C) No error(D)

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

Answer & Explanation Answer: B) B

Explanation:

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Q:

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

I will wash the car every Sunday.

A) The car would be washed by me every Sunday.	B) The car will be washed by me every Sunday.
C) Every Sunday the car would be washed by me.	D) The car will have been washed by me every Sunday.

Answer & Explanation Answer: B) The car will be washed by me every Sunday.

Explanation:

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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'.

He woke on, rising(A)/to a sitting position(B)/and rubbed his eyes briskly.(C)/No error(D)

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

Answer & Explanation Answer: A) A

Explanation:

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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'.

Industries should regularly check (1)/ if their machines are emitting (2)/ smoke within permission limits. (3)/ No error (4).

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

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