What happens when calcium is treated with water?
  1. It does not react with water
  2. It reacts violently with water
  3. It reacts less violently with water
  4. Bubbles of hydrogen gas formed stick to the surface of calcium
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (ii)
(d) (iii) and (iv)

AcademicChemistryNCERTClass 10

Correct answer: (d) (iii) and (iv)

Explanation: Calcium reacts vigorously with water and forms hydrogen bubbles, which stick to the surface of calcium.

Updated on 10-Oct-2022 13:27:24