Select the incorrect statement:

The percentage of oxygen in nitrous oxide is 36-37% and in air, 21%. It is known that oxygen is a supporter of combustion. Due to having a high percentage of oxygen, nitrous oxide shows a more vigorous combustion reaction than air.

Dehydration of phosphorus pentaoxide in presence of nitric acid is:

$4{\mathrm{HNO}}_3+{\mathrm{P}}_4{\mathrm{H}}_{10}\to 2{\mathrm{N}}_2{\mathrm{O}}_5+4{\mathrm{HPO}}_3$

Phosphorus shows different allotropes but most common are white phosphorus, red phosphorus, and black phosphorus. White is highly unstable allotrope of phosphorus due to angle strain, thereby highly reactive. Order of reactivity of phosphorus allotropes is:

White>red>black

Red phosphorus changes into white when it is vaporized followed by condensation.

$\mathrm{Red} \mathrm{P}\underset{\mathrm{cooling} \mathrm{at} \mathrm{room} \mathrm{temperature}}{\overset{\mathrm{Heated} \mathrm{at} 550°\mathrm{C} \mathrm{at} \mathrm{inert} \mathrm{atm}}{\to }}\mathrm{White} \mathrm{P}$