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JEE Main levelSingle correct optionDifficulty 2 of 3hc135

Buta-1,3-diene is treated with excess $O X_{3}$ followed by $Zn$ / $H X_{2} O$ . The products are

Aone mole of butanedial
Btwo moles of ethanal
Cone mole of methanal and one mole of propanedial
Dtwo moles of methanal and one mole of ethanedial ( $OHC - CHO$ )

Answer: D

CH X_{2} = CH - CH = CH X_{2}

has two double bonds. Cleaving both turns the two

= CH X_{2}

ends into 2

HCHO

and the central two-carbon unit into

OHC - CHO

.

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