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Hydrogen is not obtained when zinc react...

Hydrogen is not obtained when zinc reacts with

A

Cold water

B

Hot NaOH solution

C

Conc. sulphuric acid

D

Dilute HCl

Text Solution

Verified by Experts

The correct Answer is:
C
`Zn+ H_2O rarr ZnO+ H_2`
`Zn + 2NaOH rarr Na_2ZnO_2 + H_2`
`Zn + 2HCl rarr ZnCl_2 + H_2`
`Zn +2H_2SO_4 rarr ZnSO_4 + SO_2 + 2H_2O .`
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