$ \pi=\text { CRT } $
$ \Rightarrow \frac{\pi_1}{\pi_2}=\frac{\mathrm{T}_1}{\mathrm{~T}_2} $
$ \Rightarrow \pi_2=\frac{\pi_1 \mathrm{~T}_2}{\mathrm{~T}_1}=\frac{7 \times 10^5 \times 283}{273} $
$ =72.56 \times 10^4 \mathrm{Nm}^{-2}$
($n-$ ઓક્ટેનનું મોલર દળ $114 \,g\, mol ^{-1}$ આપેલ છે)