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name the substance witch is insoluble in water is added to dilute hydrochloric acid a colourless gas is evolved?

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  2. You have asked a very general question which probably has a few dozen answers, if not more. Zn is one of those answers.
    Zn is a metal, is not soluble in water, and when added to dilute HCl produces H2 gas which is colorless.

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