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Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes1 Mark
MCQ
Which of the following represents Westrosol?
  • A
    $\mathrm{CHCl}_3$
  • B
    $\mathrm{CH}_2 \mathrm{Cl}_2$
  • C
    $\mathrm{CHCl}_2 \mathrm{CH}_2 \mathrm{Cl}$
  • ✓
    $\mathrm{CCl}_2=\mathrm{CHCl}$
✓

Answer

Correct option: D.
$\mathrm{CCl}_2=\mathrm{CHCl}$
When westron vapours are passed over heated $\mathrm{BaCl}_2$​ or lime, westrol $($trichloro ethylene$)$ is obtained.
$\text{Cl}_2\text{​CH}-\text{CH​Cl}_2\xrightarrow{\text{BaCl​}_2}\text{Cl}_2​\text{C}=\text{CH}\text{Cl}$

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