Question

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

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

Answer 1

Answer: (A)

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.