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STD 12 - 6. Haloalkanes and Haloarenes — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 6. Haloalkanes and Haloarenes4 Marks
MCQ
A compound $A $ has a molecular formula ${C_2}C{l_3}OH.$ It reduces Fehling solution and on oxidation gives a monocarboxylic acid $(B)$ . $A$   is obtained by action of chlorine on ethyl alcohol. $ A $ is
  • ✓
    Chloral
  • B
    $CHC{l_3}$
  • C
    $C{H_3}Cl$
  • D
    Chloroacetic acid
✓

Answer

Correct option: A.
Chloral
a
(a) $\mathop {{C_2}C{l_3}OH}\limits_A + {\rm{Fehling}}\,{\rm{sol}}{\rm{.}} \to \mathop {C{u_2}O}\limits_{{\rm{Red}}\;{\rm{ppt}}} $

It means $-CHO$ group is present.

It means only one  $-CHO$  group is present.

${C_2}{H_5}OH + C{l_2} \to C{H_3}CHO + 2HCl$

$C{H_3}CHO + 3C{l_2} \to \mathop {CC{l_3}CHO}\limits_{{\rm{Chloral}}} + 3HCl$

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