Question

What is the correct increasing order of ease of liquifiability of the gases?

• A. $H_2$<$Ne$ <$C{H}_4$ <$C{O}_2$
• B. $C{O}_2$<$C{H}_4$ <$Ne$ <$H_2$
• C. $H_2$<$C{H}_4$ <$Ne$ <$C{O}_2$
• D. $C{H}_4$<$H_2$ <$Ne$ <$C{O}_2$

Answer 1

The correct option is A $H_2$<$Ne$ <$C{H}_4$ <$C{O}_2$

The molecules or compounds which have

the heavier molecular weight they get liquified

firstly.

Molecular wt of $H_2=2$

Molecular wt of $Ne=4$

Molecular wt of $C{H}_4=16$

Molecular wt of $C{O}_2=44$

Rate of liquifiability is

$H_2<Ne<C{H}_4<C{O}_2$

Hence, the correct option is $\text{A}$