write the method of preparation of hydrogen gas in laboratory
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The methods of preparation of hydrogen gas in a laboratory are are as follows:
When electricity is passed through water, the water decomposers into hydrogen molecule and oxygen.
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Zn+HCl——>ZnCl2+H2
Zn+H2SO4——>ZnSO4+H2
Zn+H2SO4——>ZnSO4+H2
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