Complete the reaction and balance
Ethylene `underset(C Cl_(4))overset(Br_(2))rarrAunderset(KOH)overset(Alc.)rarrBoverset(Br_(2))rarrC`

CH-=CHunderset(C Cl_(4))overset(Br_(2))to[A]overset(Zn)to[B]

CH_(3)-CH=CH_(2)underset(773 K)overset(Br_(2))to[A]underset("Heat")overset(KOH(alc.))to[B]

Write the structures of A, B and C in the following : (i) C_(6)H_(5)-CONH_(2)overset(Br_(2)//aq.KOH)rarrAunderset(0-5.^(@)C)overset(NaNO_(2)+HCl)rarrBoverset("KI")rarrC

(a) Write the structural formula of A, B, C and D in the following sequence of reaction : CH_(3)-overset(CI)overset(|)(CH)-CH_(3)underset(KOH)overset(alc)rarrAunderset("Peroxide")overset(HBr)rarrB underset("dry ether")overset(Nal)rarrC underset("dry ether")overset(Mg)rarrD Illustrate Sandmeyer's reaction with the help of a suitable example.

Ph-CH_(2)-CH=CH-CH_(3) overset((i)Br_(2))underset((ii)Alc.KOH)to

CH_(3)COOHoverset(NaOH)to[A]underset(CaO)overset(NaOH)to[B]underset(hv)overset(Br_(2))to[C]

Complete the following reaction: CH_(3)CH_(2)COOHoverset(P,Br_(2))to[A]underset((ii)H^(+))overset((i)alc. KOH("excess"))to[B]