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Haloalkanes And Haloarenes

Question
CBSEENCH12010503

Write structures of compounds A, B and C in each of the following reactions

CH subscript 3 CN space rightwards arrow from straight H subscript 3 straight O to the power of plus to SnCl subscript 2 space divided by space HCl of space straight A space rightwards arrow with dil. space NaOH space space on top space straight B space rightwards arrow with increment on top straight C

Solution
CH subscript 3 CN space rightwards arrow from straight H subscript 3 straight O to the power of plus to SnCl subscript 2 space divided by space HCl of CH subscript 3 CHO space rightwards arrow with dil. space NaOH space space on top space CH subscript 3 CH left parenthesis OH right parenthesis CH subscript 2 CHO
space rightwards arrow with space space space space space space increment space space space space space space space space on top space CH subscript 3 CH equals CHCHO