A) R < P < S < Q
B) Q < S < R < P
C) Q < S < P < R
D) R < P < Q < S
Correct Answer: C
Solution :
As the value of van der Waals' constant increases, ease of liquification of a gas also increases. The ascending order of van der Waals' constants for gases P,Q, R, S is as \[\begin{array}{*{35}{l}} 3.59<3.8<4.17<6.71 \\ (Q)~\,\,\,\,\,\,\,\,(S)~~\,\,\,\,\,(P)~~~\,\,\,\,\,(R) \\ \end{array}\] Thus, the order of ease of liquification is \[Q<S<P<R\]
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