Q. Vapour is injected at a uniform rate in a closed vessel which was initially evacuated. The pressure in the vessel
A) Increases continuously
B) Decreases continuously
C) First increases and then decreases
D) First increases and then becomes constant
Explanation
(c) As number of moles increases, pressure increases and at certain pressure vapour condenses hence pressure now decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.