Of the different allotropes of phosphorus,the one which is most reactive is

Which element of the $13^{th}$ group does not show the group oxidation state in its compounds?

The mixture of $B$ and $C$ are :
$NO \xrightarrow{O_2} A \rightleftharpoons D$
$A \xrightarrow{NaOH \ (aq.)} [B + C]$

Which of the following tendencies remains unchanged on going down in the nitrogen family (Group-$15$)?

In the following reaction,assign the correct option for the underlined atom in the product of complete hydrolysis at $R.T.$:
$\underline{N}_2O_3 + H_2O \longrightarrow 2HNO_2$

The minimum temperature required for a non-catalytic reaction between $N_2$ and $O_2$ is (in $K$)