A student added dilute hydrochloric acid to a test tube containing zinc granules and made what observation
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student added dilute HCL to a test tube containing zinc granules and made following observations: I. The zinc surface became dull and black.
Explanation:
colourless and odour less gas evolves with bubbles ,option d, is the answer. Zinc reacts with dilute HCl to form zinc chloride and hydrogen gas is evolved. Hydrogen gas is colourless and odourless gas.
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