Which of the following reactions will not produce $H_{2}$ gas?
(a) Fe $+$ dil. HCl
(b) Zn $+$ dil. HCl
(c) Cu $+$ dil. HCl
(d) Ag $+$ dil. HCl

a, c, d

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c, d

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a, d

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b, d

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Solution

The correct option is B c, d
The following reactions will not produce $H_{2}$ gas.
(c) Cu $+$ dil. HCl
(d) Ag $+$ dil. HCl .
Cu and Ag do not react with dil. HCl.

The following reactions will produce $H_{2}$ gas.

(a) Fe $+$ 2HCl (dil.) $\to F e C l_{2} + H_{2} ↑$
(b) Zn $+$ HCl (dil.) $\to Z n C l_{2} + H_{2} ↑$

Suggest Corrections

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