Q1. Why camphor disappears when kept on a plate?
(a) It sublimes
(b) It reacts with the metal of the container
(c) It reacts with the gases of the air
(d) None of the above
(UPSC Prelims 1981)
Answer: (a) It sublimes
Explanation: Camphor undergoes sublimation, meaning it changes directly from a solid to a gas without becoming liquid. This property causes it to disappear when exposed to air over time.
