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JEE Main 202127 AugustEvening Shift
Exam
JEE Main
Year
2021
Date
27 August
Shift
Evening Shift
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2021 · 27 August · Evening Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Which one of the following is formed (mainly) when red phosphorus...

Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803K?803K ?

Options

  1. Aα\alpha-Black phosphorus
  2. BWhite phosphorus
  3. CYellow phosphorus
  4. Dβ\beta-Black phosphorus

Correct answer

A. α\alpha-Black phosphorus

Step-by-step solution

When red phosphorous is heated in a sealed tube at 803K803K, then α\alpha-black phosphorous is formed.
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