1.

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

Answer»

`H_2 + F_2 to`
`CH_2 = CH_2 + H_2 to`
`PbO_2 + H_2to`
`CA + H_2 to`

SOLUTION :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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