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Hydrogen directly combines with...

Hydrogen directly combines with

A

Au

B

Cu

C

Ni

D

Ca.

Text Solution

Verified by Experts

The correct Answer is:
D
`H_(2)` does not react with Au, Cu or Ni With Ca it gives `CaH_(2)`
`Ca+H_(2)toCaH_(2)`
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  11. K(a) of H(2)O(2) is of the order of

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