Chemistry-(general)
NEET Chemistry (general) Match the Following Question
Type: Match the Following-match the column-Easy-Class 12
Match Column-I with Column-II.
| Column-I | Column-II |
|---|---|
| (a) Formation of α-black phosphorus | (i) Heating white phosphorus at 473 K under high pressure |
| (b) Preparation of phosphine | (ii) Reaction of calcium phosphide with water |
| (c) Black phosphorus forms | (iii) Chains of P4 tetrahedra linked together |
| (d) β-black phosphorus stability | (iv) Does not burn in air up to 673 K |
A
a-i, b-ii, c-iii, d-iv
B
a-ii, b-i, c-iv, d-iii
C
a-iv, b-iii, c-i, d-ii
D
a-iii, b-iv, c-ii, d-i
Correct Answer
Option A
Detailed Explanation
α-black phosphorus is formed by heating red phosphorus in a sealed tube at high temperature, while phosphine is prepared from calcium phosphide reacting with water. Additionally, black phosphorus consists of polymeric chains of P4 tetrahedra, and β-black phosphorus does not burn in air up to 673 K.
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