Chemical Properties of Group 15 Elements

A tetra-atomic molecule $\left(\mathrm{A}\right)$ on reaction with Nitrogen (I)Oxide produces two substances (B) and $\left(\mathrm{C}\right)$. (B) acts as a dehydrating agent while substance$\left(\mathrm{C}\right)$ is a diatomic gas which shows almost inert behavior. The substances $\left(\mathrm{A}\right),\left(\mathrm{B}\right)$ and$\left(\mathrm{C}\right)$ respectively are_______

The gases liberated when zinc reacts with dilute and conc. ${\mathrm{HNO}}_3$ respectively are

In an organic compound phosphorus is estimated as $\_\_\_$

Which reaction (s) among the following produce Dinitrogen?

$\left(\mathrm{i}\right) {\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{aq}\right) +{\mathrm{NaNO}}_2\left(\mathrm{aq}\right) \to$

$\left(\mathrm{ii}\right) {\mathrm{NH}}_2{\mathrm{CONH}}_2 + 2{\mathrm{H}}_2\mathrm{O} \to$

$\left(\mathrm{iii}\right) \mathrm{Ba}{\left({\mathrm{N}}_3\right)}_2 \to$

$\left(\mathrm{iv}\right) {\mathrm{NH}}_4\mathrm{Cl} + \mathrm{Ca}{\left(\mathrm{OH}\right)}_2 \to$

The acidic character of the group- $15$ elements in the increasing order is _____

The correct order for decreasing basic strength of the molecules ${\mathrm{PH}}_3,{\mathrm{AsH}}_3,{\mathrm{SbH}}_3$, and ${\mathrm{BiH}}_3$ is:

Which of the following is/are correct reason for the following statement: "${\mathrm{PH}}_3$ has low boiling point than ${\mathrm{NH}}_3$".

Nitrogen does not form ${\mathrm{NF}}_5$ because

${\mathrm{NH}}_3$ is basic while ${\mathrm{PH}}_3$ is:

Find the incorrect statement:

 Identify $\mathrm{X}, \mathrm{Y}, \mathrm{Z}$ :

What is the oxidation state that is exhibited by group 15 elements when they react with metals?

Which of the following statements is wrong?

Which of the following elements does not show allotropy?

Bond dissociation enthalpy of $\mathrm{E}—\mathrm{H} (\mathrm{E} = \mathrm{element})$ bonds is given below. Which of the compounds will act as strongest reducing agent?

The oxidation state of central atom in the anion of compound ${\mathrm{NaH}}_2{\mathrm{PO}}_2$ will be ______.

Maximum covalency of nitrogen is 

${\mathrm{PCl}}_5$ exists but ${\mathrm{NCl}}_5$ does not due to