Questions

Q:

The credit for classifying the elements on the basis of their atomic masses goes to

A) John Dalton B) John Alexander Reina Newlands
C) Dmitri Mendeleev D) Johann Wolfgang Dobereiner
 
Answer & Explanation Answer: C) Dmitri Mendeleev

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Filed Under: Chemistry
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Q:

In which of the following the dominant phase is Gametophyte?

A) Bryophyta B) Pteridophyta
C) Gymnosperms D) Angiosperms
 
Answer & Explanation Answer: A) Bryophyta

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Q:

The color of human skin depends upon

A) melanin B) carotenoids
C) anthocyanins D) chlorophylls
 
Answer & Explanation Answer: A) melanin

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Filed Under: Biology
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Q:

______ is a thyroid hormone which controls the balance of calcium in the body.

A) Calcitonin B) Thyroxine
C) Calmodulin D) all of these
 
Answer & Explanation Answer: A) Calcitonin

Explanation:

Calcitonin is 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells of the thyroid, and in many other animals in the ultimopharyngeal body. It acts to reduce blood calcium, opposing the effects of parathyroid hormone.

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Q:

Two or more elements combine to form a

A) atom B) valency
C) compound D) radical
 
Answer & Explanation Answer: C) compound

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Q:

Which of the following is the cleanest source of energy?

A) Biofuel B) Fossil fuel
C) Nuclear power D) Wind energy
 
Answer & Explanation Answer: D) Wind energy

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Filed Under: General Science
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Q:

The quantum theory of light was given by

A) Einstein B) Newton
C) Plank D) Faraday
 
Answer & Explanation Answer: C) Plank

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Filed Under: Physics
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Q:

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

 

This argument is completely ______________ and shows very little understanding ____________ education. The costs quoted for private schools, one, have no reliable source of data and, ______________, they discount two kinds of hidden costs — to the family and _____________ the nation. Often the cost of education in private schools is _________________ with the fee per child.

 

Often the cost of education in private schools is _________________ with the fee per child.

 

A) equation B) equates
C) equating D) equated
 
Answer & Explanation Answer: D) equated

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