passwella.
Menu

JAMB Chemistry 1981 Question 26

Question 26

Gas Laws

When air is compressed

  1. A.its density decreases
  2. B.it solidifies
  3. C.its temperature decreases
  4. D.its temperature increases
  5. E.its temperature remains unchanged.
Show the answer and explanation

Answer: D (its temperature increases)

Explanation

Work is done on the gas when it is squeezed, so its molecules move faster and its temperature rises (a bicycle pump gets warm). Its density increases, not decreases.