Question

Is it possible to change the temperature and pressure of a fixed mass of gas without changing its volume.explain the answer

Answer 1

These are the fundamental physical properties on which a gas depends and they will surely affect the volume of the gas.

Temperature
With increase in temperature, the kinetic energy of the atoms of the gas will increase causing high frequency vibrations due to which more space will be required by the atoms. Thus, volume increases with increase in temperature.
With decrease in temperature, the kinetic energy of the atoms will decrease causing them to be more stable and aquiring less space and hence will be decrease in volume.

Pressure
With increase in pressure, the atoms are made to come closer by the external force due the which the empty spaces among them will be occupied and volume will decrease.
With decrease in pressure. the atoms of the gas will spread widely and will increase the volume.

Answer 2

the volume of gas will remain constant if pressure and temperature of gas,both increases

according to the ideal gas equation

PV=nRT

Therefore,

if pressure and temperature both increase volume remains constant