Which property of gas is used in supplying oxygen cylinders to hospitals?

Explain why the temperature remains constant during the process of sublimation.

$2 \, mL$ of Dettol is added to a beaker containing $500 \, mL$ of water and stirred. State four observations that you make.

Explain the interconversion of three states of matter in terms of force of attraction and kinetic energy of the molecules.

Account for the following:
$(a)$ When sugar crystals dissolve in water,the level of water does not rise appreciably.
$(b)$ Doctors advise to put strips of wet cloth on the forehead of a person having high fever.
$(c)$ Naphthalene balls disappear with time without leaving any solid residue.
$(d)$ $A$ wooden table should be called a solid.
$(e)$ Dogs generally hang out their tongue in summer.

The molecules of water have more energy as compared to molecules of ice at the same temperature. Justify this statement.