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Question

Statement-I: The alkali metals can form ionic hydrides which contain the hydride ion, $ H^-$.
Statement-II: The alkali metals have low electronegativity, their hydrides conduct electricity when fused and liberate hydrogen at the anode.

A
Statement-I is true; Statement-II is true; Statement-II is the correct explanation for Statement-I
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B
Statement-I is true; Statement-II is true; Statement-II is not the correct explanation for Statement-I
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C
Statement-I is true; Statement-II is false
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D
Statement-I is false; Statement-II is true
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Solution

The correct option is D Statement-I is true; Statement-II is true; Statement-II is the correct explanation for Statement-I
The alkali metals can form ionic hydrides which contain the hydride ion, H as NaH,KH,LiH and CsH.
Also, alkali metals have low electronegativity and in molten state they exists as ion and conduct electricity.
On electrolysis,
At anode H oxidises and liberates hydrogen as
2H2eH2

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