What happens when calcium is treated with water?
(i) it is 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
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(i) it is 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
[D] (iii) and (iv)
Calcium reacts slowly with water. The reaction forms calcium hydroxide and hydrogen gas. The calcium metal sink in water and after hour bubbles of hydrogen are observed, stuck to the surface of the metal. Hence your answer will be option [D].