Set-I Set-II
A) Sodium benzoate 1) Red hot iron tube
B) Phenol 2) dil. HCl
C) Acetylene 3) anhydrous ${AlCl}_{3}$
D) Benzene sulphonic acid 4) Zinc dust, ∆
5) Soda lime, ∆
Correct matching to get benzene is

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A→3, B→4, C→1, D→5

A→2, B→4, C→1, D→3

A→5, B→4, C→1, D→2

A→2, B→5, C→1, D→3

answer is C.

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Detailed Solution

When sodium benzoate which is a type of preservative when interacts with soda lime, decarboxylation occurs that produces benzene and sodium carbonate.
When phenol and zinc dust are heated, benzene is produced through reduction.
Acetylene passes through a tube that is extremely hot, producing benzene as the end result.
Desulphonation of benzene sulphonic acid can be accomplished by heating it under pressure to 150–200°C while adding diluted hydrochloric acid.
In alkali, it dissolves and salts are created. Aniline is produced by fusing sodium benzene sulphonate with sodamide.
Hence the correct option is (C) A→5, B→4, C→1, D→2.

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