Match the terms in Column $-I$ with the relevant item in Column $-II$.
Column $-I$ Column $-II$
$A$. Electrolysis of water produces $1$. atomic reactor
$B$. Lithium aluminium hydride is used as $2$. polar molecule
$C$. Hydrogen chloride is a $3$. recombines on metal surface to generate high temperature
$D$. Heavy water is used in $4$. reducing agent
$E$. Atomic hydrogen $5$. hydrogen and oxygen

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Match the following columns:
Column-$I$ Column-$II$
$(i)$ Hydrogen peroxide $(a)$ Used as air purifier in submarines
$(ii)$ Calcium sulphate hemihydrate $(b)$ Used for water softening
$(iii)$ Potassium superoxide $(c)$ Antiseptic
$(iv)$ Calgon $(d)$ Plaster of Paris

Sodium oxalate on heating with conc. $H_2SO_4$ gives

Match the following columns:
Column-$I$ Column-$II$
$(i)$ Hydrogen peroxide $(a)$ Used as air purifier in submarines
$(ii)$ Calcium sulphate hemihydrate $(b)$ Used for water softening
$(iii)$ Potassium superoxide $(c)$ Antiseptic
$(iv)$ Calgon $(d)$ Plaster of Paris

Sea divers use a mixture of

List-$I$ contains compounds and List-$II$ contains reactions.
List-$I$ List-$II$
$I$. $H_2O_2$ $P$. $Mg(HCO_3)_2 + Ca(OH)_2 \rightarrow$
$II$. $Mg(OH)_2$ $Q$. $BaO_2 + H_2SO_4 \rightarrow$
$III$. $BaCl_2$ $R$. $Ca(OH)_2 + MgCl_2 \rightarrow$
$IV$. $CaCO_3$ $S$. $BaO_2 + HCl \rightarrow$
$T$. $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow$

Match each compound in List-$I$ with its formation reaction$(s)$ in List-$II$,and choose the correct option.

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