Solution

For an ideal gas, internal (kinetic) energy $U=\frac{f}{2}nRT$. So an increase in temperature leads to an increase in the kinetic energy of the gas molecules. The mass does not change, pressure increases (not decreases) in a fixed container, and intermolecular distance does not decrease.

Concept effect of temperature on kinetic energy

Kinetic Theory in past papers

34 questions from this chapter have appeared across 19 exam years.