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Which of the following cannot displace ...

Which of the following cannot displace hydrogen from steam ?

A

`Cd`

B

`Fe`

C

`Cr`

D

`Zn`

Text Solution

Verified by Experts

The correct Answer is:
A
Less reactive metals, such as `Ma. Al. Mn, Zn, Cr,` and ` Fe`, react with steam to give hydrogen gas :
` 2Fe(s) + 3H_2 O(g) rarr Fe_2O_3(s) + 3H_2(g)`
`Cd + H_2O(g) rarr` No reaction.
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