Density of solid decrease/increases with rise in temperature. Explain.

Complete the statements by filling the blanks with the correct word from the bracket. Solubility of most solids………….. [decreases/increases) with rise in temperature.

Does the adsorption of a gas on the surface of solid increases or decreases with rise in temperature ?

Assertion : A solid floats in a liquid so that it is just submerged . When the liquid is heated the solid sinks to the bottom. Reason : Weight of the solid increases with the rise in temperature .

Rate of evaporation of a liquid increases with rise in temperature-explain.

Rate of physisorption always increases with decrease in temperature. Explain.

Name one material whose resistivity decreases with rise in temperature. Explain briefly on the basis of free electron theory why the resistivity decreases.

the solubility of CO_(2) in water decreases with increases in temperature . Explain.