Chemistry · 2021
JEE Main · 4 August 2021, Shift 2 · Q52
A gaseous mixture of helium and oxygen contains 20 % helium by weight. If the partial pressure of oxygen in the mixture is 5 atm, the partial…
A gaseous mixture of helium and oxygen contains $\displaystyle 20 \%$ helium by weight. If the partial pressure of oxygen in the mixture is $\displaystyle 5$ atm , the partial pressure of helium is \_\_\_\_ atm.
(Nearest integer)
[Atomic Masses : He : $\displaystyle 4.0$ u; O : $\displaystyle 16.0$ u]
Official answer
10
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.