By the action of hot conc. $H_2SO_4,$ phosphorus changes to

For making $Ag$ from $AgNO_3$,which of the following is used?

It is because of the inability of $ns^{2}$ electrons of the valence shell to participate in bonding that:

Litharge is chemically

Which one of the orders is correctly matched with the property mentioned against it?

Regarding the hydrides of group $15$ elements $EH_{3}$ $(E = N, P, As, Sb, Bi)$, select the correct statement from the following:
$A$. The stability of hydrides decreases down the group.
$B$. The basicity of hydrides decreases down the group.
$C$. The reducing character increases down the group.
$D$. The boiling point increases down the group.
Choose the correct answer from the options given below: