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JEE-MAIN 2019
12-01-2019 S1
Question
Given
Gas H2 CH4 CO2 SO2
Critical 33 190 304 630
Temperature/K On the basis of data given above, predict which of the following gases shows least adsorption on a definite amount of charcoal?
Select the correct option:
A
$\mathrm{SO}_2$
B
$\mathrm{CO}_2$
C
$\mathrm{CH}_4$
D
$$ \mathrm{H}_2 $$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
More easily liquefiable a gas is (i.e. having higher critical temperature), the more readily it will be adsorbed.
∴ Least adsorption is shown by $\mathrm{H}_2$ (least critical temperature)
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