Allotropes of Phosphorus and Phosphine

JEE Main Chemistry · p-Block Elements (Groups 15 to 18) · 3 questions, latest first

• A →573 K Red phosphorus →[ under pressure ] heat; 803 K B Red phosphorus is obtained by heating "A" at 573 K, and can be…202230 June, Shift 1 · Q70
• Heating white phosphorus with conc. NaOH solution gives mainly:202227 June, Shift 1 · Q70
• Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803 K?202127 August, Shift 2 · Q36