Why does the temperature of a gas rise when it is suddenly compressed?

A cylinder with a movable piston contains 3 moles of hydrogen at standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume?

Does the pressure of a gas,on heating,increases?

Why is it that rates of most reactions increase when the temperature of reaction mixture is increased?

Why does mercury not cling to glass?

Why does the molality of a solution remain unchanged with temperature?

Why does the level of mercury fall in a capillary?

Why does the earth have an atmosphere and the moon does not?

Why does the moon revolve round the earth?

Why does a piece of red glass when heated and taken out glow with green light?