Question

The given figure shows, a gas trapped in part X of the apparatus containing mercury. If the atmospheric pressure is 760 mm Hg, then what is the pressure of gas?

• A. 80 mm Hg
• B. 150 mm Hg
• C. 300 mm Hg
• D. 910 mm Hg

Answer 1

The correct option is D 910 mm Hg

$\text{Pressure at}$

$\text{Same level is same.}$

$P=P_0+{\rho }_{g}h$

$=760+150\text{mm of}{H}_g$

$=910\text{mm of hg.}$