Rate of Solubility

Q.

The solubility of gases in water increases with increase in pressure.

1. False

2. True

Q.

Solubility of a solid in water always increases with increase in temperature.

1. False

2. True

Q. State the importance of the solubility of $C{O}_2$ and $O_2$ in water.

Q. A substance X dissolves very fast when put into a solvent Y at
${25}^{\circ }C$.
A substance Z dissolves comparatively slowly when put into solvent Y at ${25}^{\circ }C$.
So, I conclude: substance X has more solubility than substance Y.

1. False
2. True