Q25 / 150 · MHT CET 2019 (Shift 2) · Chemistry

The reaction in which 2 molecules of chlorobenzene reacts with metallic sodium in presence of dry ether forming biphenyl is an example of,

A
Wurtz – Fittig reaction
Correct answer
B
Wurtz reaction
C
Resenmund reaction
D
Balz – Schiemann reaction

Solution

Let, the oxidation state of sulphur in

H_{2} S_{2} O_{7}

be x.

∴ 2 (1 +) + 2 (x) + 7 (- 2) = 0

2 + 2 x - 14 = 0

2 x = 12 x = 6

Hence, the correct answer is option: 'B'.

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