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In which of the following pairs, each me...

In which of the following pairs, each member produces the same gas when reacted with water?

A

`K, KO_(2)`

B

`Na, Na_(2)O_(2)`

C

`Ca, CaH_(2)`

D

`Ba,BaO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Both Ca and `CaH_(2)` react with water to evolve `H_(2)` gas.
`Ca + 2H_(2) O to Ca(OH)_(2) + H_(2)`
`CaH_(2) + 2H_(2)O to Ca(OH)_(2) + 2H_(2)`
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