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Give the structure of A, B and C in the following reactions:
$CH subscript 3 CH subscript 2 Br space rightwards arrow with KCN on top space straight A thin space rightwards arrow with LiAlH subscript 4 on top space straight B space rightwards arrow from 0 degree straight C to HNO subscript 2 of space straight C$

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242.
Give the structure of A, B and C in the following reactions:
$straight C subscript 6 straight H subscript 5 NO subscript 2 space rightwards arrow with Fe divided by HCl on top thin space straight A space space rightwards arrow from 273 space straight K to NaNO subscript 2 plus HCl of space straight B thin space rightwards arrow from increment to straight H subscript 2 straight O divided by straight H to the power of plus of$ C

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243.

Give the structure of A, B and C in the following reactions:
$CH subscript 3 COOH space rightwards arrow from increment to NH subscript 3 of space straight A space rightwards arrow with NaOBr on top space straight B space rightwards arrow with HCl on top straight C$

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244.

Give the structure of A, B and C in the following reactions:
$straight C subscript 6 straight H subscript 5 NO subscript 2 space rightwards arrow with Fe divided by HCl on top space straight A space rightwards arrow from 273 space straight K to HNO subscript 2 of space straight B space rightwards arrow with straight C subscript 6 straight H subscript 5 OH on top straight C$