Preparation of haloalkanes - class-XII

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Multiple Choice

An organic halide ,${C _2}{H _4}C{l _2}$ gives an unsaturated hydrocarbon on treatment with aloc .KOH,but ethanal on reaction with aq. KOH, the halide is:

  1. $C{H _3}CHC{l _2}$
  2. $C{H _2}ClC{H _2}Cl$
  3. a mixture of (a) and (b)
  4. none of these
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