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JEE Main levelSingle correct optionDifficulty 2 of 3hc045

Buta-1,3-diene, $CH X_{2} = CH - CH = CH X_{2}$ , is subjected to ozonolysis with reductive work-up. The products are

Aethanal only
Bmethanal and ethanedial in the mole ratio 2 : 1
Cmethanal and ethanal in the ratio 1 : 1
Dbutanedial only

Answer: B

Both double bonds are cleaved. The terminal

CH X_{2} =

carbons give two

HCHO

, and the two central carbons form

OHC - CHO

(ethanedial). The ratio is 2 : 1.

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