In which of the following reaction does ...

In which of the following reaction does bydragen act as an oxidising agent?

A

`H_2 + F_2 to`

B

`CH_2 = CH_2 + H_2 to`

C

`PbO_2 + H_2to`

D

`Ca + H_2 to`

Verified by Experts

The correct Answer is:

D

Hydrogen can gain electrons when reacts with metals like Ca and act as oxidising agent.
`Ca + H_2 to CaH_2`

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