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The most abundant elements by mass in th...

The most abundant elements by mass in the body of a healthy human adult are: Oxygen (61.4%), Carbon (22.9%), Hydrogen (10.0%), and Nitrogen (2.6%). The weight which a 75 kg person would gain if all `.^(1)H` atoms are replaced by `.^(2)H` atoms is:

A

37.5 kg

B

7.5 kg

C

10 kg

D

15 kg

Text Solution

Verified by Experts

The correct Answer is:
B
75 kg person contains 10% hydrogen i.e. 7.5 kg hydrogen.
If all H atoms are replaced by , `""^(2)H` the weight of hydrogen become twice i.e. it increases by 7.5 kg.
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