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Q. Compare $List-I$ and $List-II$ and choose the correct matching codes from the choices given.

List I List II

A Glycerol i Sublimation

B $o$ -Nitrophenol ii Beilstein's test

C Anthracene iii Victor-Meyer's method

D Halogens iv Steam distillation

E Molecular weight v Vacuum distillation

vi Eudiometry

KEAMKEAM 2007Organic Chemistry – Some Basic Principles and Techniques

A

$A-(v), B-(iv), C-(i), D-(ii), E-(iii)$

B

$A-(iv), B-(v), C-(i), D-(vi), E-(ii)$

C

$A-(vi), B-(iv), C-(i), D-(m), E-(ii)$

D

$A-(v), B-(iv), C-(vi), D-(ii), E-(iii)$

E

$A-(iv), B-(vi), C-(ii), D-(iii), E-(v)$

Solution:

Sublimation -Conversion of solid directly into gaseous phase. The liquid state does not exist.
e.g., $ - $ naphthalene, anthracene.
Beilstein test-Simple chemical lest for halogens.
Victor-Meyers method-Standard laboratory method for determining the molecular weight of a volatile liquid.
Steam distillation- Vaporization of the volatile constituents of a liquid. It is special type of distillation for a temperature sensitive materials like aromatic natural compounds, eg,-ortho nitrophenol, cinnamaldehyde.
Vacuum distillation-Distillation at reduced pressure. It is generally used in case of high boiling liquids which decompose below their normal boiling points, cant be purified by distillation at atmospheric pressure $ eg,- $ glycerol.
Eudiometry- It is the process of determining the constituents of a gaseous mixture by eudiometer. It is used for ascertaining the purity of air or amount of $ {{O}_{2}} $ in it.