When dilute hydrochloric acid is added to granulated zinc placed in a test tube, the observation made is:
(1) the surface of the metal turns shining. (2)the reaction mixture turns milky.
(3)odour of chlorine is observed. (4)a colourless and odourless gas evolves with bubbles.
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Correct answer: (4) a colourless and odourless gas evolves with bubbles.

Explanation: When dilute hydrochloric acid is added to granulated zinc, hydrogen gas is produced, which is a colourless and odourless gas and is evolved with bubbles.

The chemical equation for the reaction is given below:

$2HCl(l)+Zn(s)→ZnCl_2(aq)+H_2(g)$

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Updated on: 10-Oct-2022

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(1) the surface of the metal turns shining.	(2)the reaction mixture turns milky.
(3)odour of chlorine is observed.	(4)a colourless and odourless gas evolves with bubbles.

When dilute hydrochloric acid is added to granulated zinc placed in a test tube, the observation made is:(1) the surface of the metal turns shining.(2)the reaction mixture turns milky.(3)odour of chlorine is observed.(4)a colourless and odourless gas evolves with bubbles."

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When dilute hydrochloric acid is added to granulated zinc placed in a test tube, the observation made is:
(1) the surface of the metal turns shining. (2)the reaction mixture turns milky.
(3)odour of chlorine is observed. (4)a colourless and odourless gas evolves with bubbles.
"