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Question

Hydrogen is not obtained when zinc reacts with:

A
Cold water
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B
Hot NaOH solution
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C
Conc. H2SO4
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D
Dil. HCl
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Solution

The correct option is C Conc. H2SO4
Zinc does not react with cold water. Also, with concentrated sulphuric acid,

Zn+conc. H2SO4ZnSO4+SO2+H2O

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