Chemical Properties of Group 15 Elements

Which of the following is not hydrolysed?

Which of the following is the increasing order of enthalpy of vaporization?

The element which forms oxides in all oxidation states $+\mathrm{I}$ to $+\mathrm{V}$ is

Which of the following does not form a pentachloride?

The number of oxygen atoms attached to each $\mathrm{P}$ in ${\mathrm{P}}_2{\mathrm{O}}_5$ is

Consider the odd electron species $\mathrm{NO}$ and ${\mathrm{NO}}_2$ and select the incorrect statement.

Which of the following is correct?

Calomel $\left({\mathrm{Hg}}_2{\mathrm{Cl}}_2\right)$ on reaction with ${\mathrm{NH}}_4\mathrm{OH}$ gives

Which of the following can be hydrolysed?

Anhydride of nitrous acid and nitric acid are

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

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

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

Hydracid which contains nitrogen is

Mercurous azide is:-

On dissolving moderate amount of sodium metal in liquid ${\mathrm{NH}}_3$ at low temperature, which one of the following does not occur?

In${\mathrm{P}}_4{\mathrm{O}}_{10}$ the number of oxygen atoms bonded to each phosphorus atom is_____.

Regular use of which of the following fertilisers increases the acidity of soil?

The true statement for the acids of phosphorus ${\mathrm{H}}_3{\mathrm{PO}}_2, {\mathrm{H}}_3{\mathrm{PO}}_3$ and ${\mathrm{H}}_3{\mathrm{PO}}_4$ is.