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Question

Correct sequence of abundance of elements in the human body is

A
Ca>S>Mg>H
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B
N>Ca>H>S
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C
Mg>Na>S>H
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D
C>H>N>Si
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Solution

The correct option is D C>H>N>Si
A. C>H>N>Si
Explanation : Carbon is the basis of all organic molecules and second largest element in the body. Carbon contain 18% of body weight. Hydrogen contain 10%. nitrogen contain approximately 3% of the human body. Nitrogen gas present in lungs. In the human body Si abundance is 0.20% to 0.25%. Si is present in keratin.
So, the correct answer is option A. C>H>N>Si

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