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24 December, 16:21

A) Suggest any three methods for the preparation of H2 gas by selecting suitable substance given below.

Na, Zn, CaH2, H2O, Al, NaOH, HCl

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  1. 24 December, 16:51
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    1. Action of Zn on HCl

    2. Action of Na on cold H2O

    3. Action of aluminium on NaOH
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