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Amines

Question
CBSEENCH12010378

Write the structures of A, B and C in the following:

straight i right parenthesis space straight C subscript 6 straight H subscript 5 space minus CONH subscript 2 space rightwards arrow with Br subscript 2 divided by aq. KOH on top space straight A space rightwards arrow from 0 minus 5 to the power of 0 straight C to NaNO subscript 2 space plus HCl of space straight B space rightwards arrow with KI on top space straight C

ii right parenthesis space CH subscript 3 minus Cl space rightwards arrow with KCN on top space straight A space rightwards arrow with LiAlH subscript 4 on top space straight B rightwards arrow from increment to CHCl subscript 3 space plus alc. space KOH of space straight C

Solution
straight i right parenthesis space straight C subscript 6 straight H subscript 5 minus CONH subscript 2 space rightwards arrow with Br divided by aq. KOH on top space stack bold C subscript bold 6 bold H subscript bold 5 bold NH subscript bold 2 with straight A below
stack straight C subscript 6 straight H subscript 5 NH subscript 2 space with straight A below space rightwards arrow from 0 minus 5 to the power of 0 space straight C to NaNO subscript 2 space plus HCl of space stack bold C subscript bold 6 bold H subscript bold 5 bold N subscript bold 2 bold Cl with straight B below space rightwards arrow with KI on top space stack bold C subscript bold 6 bold H subscript bold 5 bold I with bold C below
ii right parenthesis space CH subscript 3 minus Cl space rightwards arrow with KCN on top space stack bold CH subscript bold 3 bold CN with bold A below space rightwards arrow with LiAlH subscript 4 on top bold space stack bold CH subscript bold 3 bold CH subscript bold 2 bold minus bold NH subscript bold 2 with bold B below

stack CH subscript 3 CH subscript 2 minus NH subscript 2 with straight B below space rightwards arrow from increment to CHCl subscript 3 space plus alc. space KOH of space stack bold CH subscript bold 3 bold CH subscript bold 2 bold NC with bold C below