Can the temperature of a gas be increased by keeping its pressure and volume constant?

The temperature of an ideal gas increases in an:

At constant volume, temperature is increased. Then :

Pressure of an ideal gas is increased by keeping temperature constant. What is the effect on kinetic energy of molecules?

What is the nature of graph between pressure P and volume V for a gas at constant temperature?

Temperature of 1 mole of a gas is increased by 2^(@)C at constant pressure. Work done is :

A cylinder with a movable piston contains3moles of hydrogen atstandard 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 ?

If the radius of the earth were increased by a factor of 2 keeping the mass constant, by what factors would its density have to be changed to keep g same?