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

Organic Chemistry - Purification and Characterization of Organic Compounds

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


1.
Which of the following methods is best suited for purifying solids with high melting points?
A.
Crystallization
B.
Distillation
C.
Sublimation
D.
Extraction
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ANSWER :
A. Crystallization
2.
Which method is commonly used to separate a mixture of camphor and salt?
A.
Filtration
B.
Distillation
C.
Chromatography
D.
Sublimation
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ANSWER :
D. Sublimation
3.
Sublimation is a suitable method for separating substances that:
A.
Melt upon heating
B.
Convert directly to gas
C.
React with air
D.
Dissolve in water
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ANSWER :
B. Convert directly to gas
4.
Which of the following is used for separation of components of ink?

NEET - 2020

A.
Crystallization
B.
Paper chromatography
C.
Simple distillation
D.
Centrifugation
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ANSWER :
B. Paper chromatography
5.
Which purification technique is used to obtain pure benzoic acid from a mixture?
A.
Crystallization
B.
Filtration
C.
Centrifugation
D.
Distillation
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ANSWER :
A. Crystallization
6.
In distillation, the component with lower boiling point:
A.
Condenses first
B.
Evaporates last
C.
Remains in flask
D.
Burns off
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ANSWER :
A. Condenses first