A metal is reacted with dilute hydrochloric acid in a test tube a burning matchstick is brought close to the mouth of the test tube but no sound is here a container made of the same material when left is humid climate for several days develops a green coating on its surface identify the metal describe their metal is reactive
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When dilute hydrochloric acid is added to granulated zinc placed in a test tube, a colourless and odourless gas is evolved with bubbles.
The chemical reaction can be written as:
Zn + 2HCl → ZnCl
2
+ H
2
Hence, the correct option is D
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