Question

Statement A: Gases deviate from their ideal behaviour at low temperatures.
Statement B: At low temperatures, the molecular attractions become significant. This leads to a deviation from the ideal behaviour of a gas.

• A. Both statements A and B are false.
• B. Both statements A and B are true.
• C. Statement A is true, but statement B is false
• D. Statement A is false, but statement B is true.

Answer 1

The correct option is B Both statements A and B are true.

At high temperatures, the molecular motion readily overcomes the molecular attractions. Also, the molecules move about like there is no molecular attraction. However, at low temperatures, the molecular attractions become significant and this leads to a deviation from the ideal behaviour of a gas. Hence, statements A and B are true.