146479
Two containers A and B are partly filled with water and closed. The volume of $A$ is twice that of $B$ and it contains half the amount of water in $B$. If both are at the same temperature, the water vapour in the containers will have pressure in the ratio of
1 $1: 2$
2 $1: 1$
3 $2: 1$
4 $4: 20$
Explanation:
B Vapour pressure of a substance is independent of amounts of substances. It depends only on temperature, so, their ratio $\mathrm{P}_{\mathrm{A}}: \mathrm{P}_{\mathrm{B}}$ is $1: 1$.