Question

Which of the following properties of white phosphorus are shared by red phosphorus?

• A. It exhibits phosphorescence in air
• B. It reacts with hot aqueous $NaOH$ to give phosphine
• C. It dissolves in carbon disulphide
• D. It burns when heated in air

Answer 1

Answer: (D)

It burns when heated in air

White phosphorus exhibits phosphorescence in air while red phosphorus does not.
White phosphorus reacts with hot aqueous $NaOH$ to give phosphine while red phosphorus does not.
White phosphorus dissolves in carbon disulphide while red phosphorus does not.
Both red phosphorus and white phosphorus burns when heated in air.