Question

Select the incorrect statement.

A

Nitrous oxide supports combustion more vigorously than air

B

Phosphorus pentaoxide dehydrates nitric acid forming nitrogen pentaoxide

C

Reactivity order of various allotropic forms of phosphorus is white > red > black

D

Red phosphorus changes to white phosphorus on heating in the atmosphere of or coal gas at

Medium
Updated on : 2022-09-05
Solution
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Correct option is D)

Option (D) is correct.
(D) : Red phosphorus changes to black phosphorus on heating in the atmosphere of or coal gas at 573.
It is obtained by heating white phosphorus at 573 in an inert atmosphere for several days. 

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