.Hydrochloric acid is taken in a test tube and a piece of zinc metal is put into it. The collected gas
evolved in the test tube is tested by bringing it near the burning matchstick.
(a) Which is the gas evolved in the test tube after the reaction?
(b) What happened to the burning matchstick when it is brought near to the mouth of the test tube?
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When dilute HCl is added to granulated zinc placed in a test tube, the observation made is: (a) the surface of the metal turns shining (b) the reaction mixture turns milky (c) odour of chlorine is observed (d) a colourless and odourless gas evolves with bubbles.
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lol,o
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