NEET Chemistry (general) Match the Following Question
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
Choose the correct matching:
a-i, b-ii, c-iii, d-iv
a-ii, b-i, c-iv, d-iii
a-iv, b-iii, c-i, d-ii
a-iii, b-iv, c-ii, d-i
Correct Answer
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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