Physics · 2019
JEE Main · 10 April 2019, Shift 1 · Q15
A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperature of the gas by 20°C is:…
A cylinder with fixed capacity of $\displaystyle 67.2$ lit contains helium gas at STP. The amount of heat needed to raise the temperature of the gas by $\displaystyle 20$°C is : [Given that $\displaystyle \mathrm{R}=8.31 \mathrm{~J} \mathrm{~mol}^{-1}$ $\displaystyle \mathrm{K}^{-1}$ ]
Official answer
(2)
$\displaystyle 748$ J
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.