At high temperature,nitrogen combines with $CaC_2$ to give:

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{Cr}O_2Cl_2 + 2H_2O \longrightarrow H_2CrO_4 + 2HCl$

Which one of the following statements is not correct?

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{Si}Cl_4 + H_2O \longrightarrow H_4SiO_4 + HCl$

Observe the following reactions (unbalanced):
$P_2O_3 + H_2O \rightarrow X$
$P_4O_{10} + H_2O \rightarrow Y$
The number of $P=O$ bonds present in $X$ and $Y$ are respectively:

$(i) \, Al \, \xrightarrow{N_2} \, A$
$(ii) \, Al \, \xrightarrow{C} \, B$
Here $A$ and $B$ on hydrolysis respectively give: