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(B) $(i)$ Saline hydrides like $NaH$ react with water to liberate $H_2$ gas. This statement is correct.$(ii)$ Presently,about $77 \%$ of industrial di

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$i, iii$ only

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(B) $(i)$ Saline hydrides like $NaH$ react with water to liberate $H_2$ gas. This statement is correct.$(ii)$ Presently,about $77 \%$ of industrial dihydrogen is produced from petrochemicals,not coal. This statement is incorrect.$(iii)$ Commercially marketed $H_2O_2$ is often sold as a $10 \ V$ solution,which corresponds to approximately $3 \% H_2O_2$ by mass. This statement is correct.

The correct statements among the following are
$i$. Saline hydrides produce $H_2$ gas when reacted with water
$ii$. Presently $\sim 77 \%$ of the industrial dihydrogen is produced from coal
$iii$. Commercially marketed $H_2O_2$ contains $3 \% H_2O_2$

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The correct statements among the following are$i$. Saline hydrides produce $H_2$ gas when reacted with water$ii$. Presently $\sim 77 \%$ of the industrial dihydrogen is produced from coal$iii$. Commercially marketed $H_2O_2$ contains $3 \% H_2O_2$