A gas will approach ideal behaviour at a) low temperature and low pressure b) low temperature and high pressure c) high temperature and low pressure d) high temperature and high pressure

A gas will approach ideal behaviour c) at high temperature and low pressure.

Explanation

When the temperature is high and pressure is low, gas occupies an infinitely large volume. As the temperature increases, the volume of the gas also increases due to an expansion of gas molecules. For pressure to decrease, the volume and quantity of the gas should be less. At this condition, gas follows the kinetic theory of gases and gas follows the ideal behaviour.