What happens when calcium is treated with water?
I. It does not react with water.
II. It reacts violently with water.
III. It reacts moderately with water.
IV. Bubbles of hydrogen gas formed stick to the surface of calcium.

II and III

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I and II

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III and IV

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I and IV

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Solution

The correct option is C III and IV
.

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Similar questions

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.

Question 6
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)

What happens when calcium is treated with cold water?

(i) It does not react with cold water.
(ii) Hydrogen gas evolved catches fire.
(iii) Hydrogen gas evolved does not catch fire.
(iv) Calcium floats on the surface of the water.

Q. Assertion :Calcium floats over water during the reaction with water. Reason: Calcium reacts with water less vigorously so that the heat evolved is not sufficient for the hydrogen formed, to catch fire. The bubbles of hydrogen gas formed stick to the surface of the water calcium

Q. why does hydrogen bubble stick to metal surface when it reacts with water

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What happens when calcium is treated with water?​ I. It does not react with water. II. It reacts violently with water. III. It reacts moderately with water. IV. Bubbles of hydrogen gas formed stick to the surface of calcium.

The correct option is C III and IV.

What happens when calcium is treated with water?
I. It does not react with water.
II. It reacts violently with water.
III. It reacts moderately with water.
IV. Bubbles of hydrogen gas formed stick to the surface of calcium.

The correct option is C III and IV
.