Question

What happens when calcium is treated with water?
(i) It does not react with water
(ii) It reacts violently with water
(iii) It reacts less violently with water
(iv) 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)

NCERT Class X
Science - Exemplar Problems

Chapter_Metals and Non Metals

Answer 1

the answer is d: 3rd n 4th options are correct
calcium fairly reacts with water and produces bubbles of hydrogen

Answer 2

Answer: hey here is ur answer

Ans is it reacts less violently in water and bubbles of hydrogen gas form stick to the surface of the calcium