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Chemistry · 2017
JEE Main 2017 · 2017-04-02 Offline · Q49
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 most abundant elements by mass in the body of a healthy human adult are : Oxygen ($\displaystyle 61.4$%); Carbon ($\displaystyle 22.9$%), Hydrogen ($\displaystyle 10.0$%); and Nitrogen ($\displaystyle 2.6$%). The weight which a $\displaystyle 75$ kg person would gain if all $\displaystyle { }^1 \mathrm{H}$ atoms are replaced by $\displaystyle { }^2 \mathrm{H}$ atoms is :
Official answer
(1)
7.$\displaystyle 5$ kg
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JEE Main 2017 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.