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Aldehydes, Ketones And Carboxylic Acids

Question
CBSEENCH12010506

Do the following conversions in not more than two steps :
Propanone to Propene

Solution
CH subscript 3 COCH subscript 3 space rightwards arrow with NaBH subscript 4 on top space CH subscript 3 CH left parenthesis OH right parenthesis CH subscript 3 space rightwards arrow with conc. space straight H subscript 2 SO subscript 4 on top space CH subscript 3 CH equals CH subscript 2