Approximately what fraction of the mass of human body is oxygen?

\frac{1}{3}

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\frac{1}{2}

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\frac{2}{3}

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\frac{3}{4}

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Solution

The correct option is C $\frac{2}{3}$
Most of the mass of the human body is oxygen, which is around $65 %$ . This accounts for $\frac{2}{3}$ part of body mass.

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Similar questions

Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is:

Options1)1/3

2)1/2

3)2/3

4)1/3*273/298

Answer is option1

\frac{3 \times 1^{3}}{1^{2}} + \frac{5 \times (1^{3} + 2^{3})}{1^{2} + 2^{2}} + \frac{7 \times (1^{3} + 2^{3} + 3^{3})}{1^{2} + 2^{2} + 3^{2}} + \dots upto 10 terms

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