Agas is most likely to exist at which of the following conditions?
a) high temperatures and high pressures
b) high temperatures and low pressures
c) low temperatures and high pressures
d) low temperatures and low pressures

A gas is most likely to exist at B) High temperatures and low pressures

Explanation:

Ideal gas behaviour is likely to be at high temperature and low pressure .

The causes of deviations from ideal behaviour may be due to the following two assumptions of kinetic theory of gases.  

The volume occupied by gas molecules is negligibly small as compared to the volume occupied by the gas.

The forces of attraction between gas molecules are negligible.

Deviation occur for real gases with a minor difference from that of an Ideal gas.

When real gases are at low pressures and high temperatures they behave close enough to ideal gases

the temperature of the gas, in k, not celsius.