Purification (Crystallization, Sublimation, Distillation,...) NEET Questions

Organic Chemistry - Purification and Characterization of Organic Compounds

Purification (Crystallization, Sublimation, Distillation,...) MCQ Questions


7.
Chromatography separates compounds based on:
A.
Molecular weight
B.
Boiling point
C.
Polarity and adsorption
D.
Solubility only
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ANSWER :
C. Polarity and adsorption
8.
Which technique is ideal for separating a mixture of liquids with large boiling point differences?
A.
Fractional distillation
B.
Simple distillation
C.
Vacuum distillation
D.
Steam distillation
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ANSWER :
B. Simple distillation
9.
Which of the following is a non-volatile impurity removal method?
A.
Sublimation
B.
Evaporation
C.
Filtration
D.
Chromatography
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ANSWER :
A. Sublimation
10.
In paper chromatography, the stationary phase is:

NEET - 2019

A.
Liquid solvent
B.
Paper
C.
Mobile phase
D.
Filter paper
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ANSWER :
B. Paper
11.
Which method separates two immiscible liquids?
A.
Decantation
B.
Distillation
C.
Differential extraction
D.
Crystallization
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ANSWER :
C. Differential extraction
12.
Sublimation is NOT suitable for:
A.
Iodine
B.
Camphor
C.
Sodium chloride
D.
Naphthalene
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ANSWER :
C. Sodium chloride