Methods of Purification of Organic Compounds

IMPORTANT

Methods of Purification of Organic Compounds: Overview

This Topic covers sub-topics such as Chromatography, Thin Layer Chromatography, Sublimation, Distillation, Column Chromatography, Fractional Distillation, Steam Distillation, Principle of Chromatography and, Principle of Thin Layer Chromatography

Important Questions on Methods of Purification of Organic Compounds

MEDIUM
IMPORTANT

Three organic compounds A, B and C were allowed to run in thin layer chromatography using hexane and gave the following result (see figure). The Rf value of the most polar compound is _____ ×102

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EASY
IMPORTANT

Which of the following statement is correct for paper chromatography?

MEDIUM
IMPORTANT

Thin layer chromatography of a mixture shows the following observation:

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The correct order of elution in the silica gel column chromatography is

MEDIUM
IMPORTANT

Using column chromatography, mixture of two compounds ‘A’ and ‘B’ was separated. ‘A’ eluted first, this indicates ‘B’ has

EASY
IMPORTANT

Retardation factor is the fraction of analyte in _____ of chromatographic system.

EASY
IMPORTANT

Name the apparatus used in the partition chromatography.

 

EASY
IMPORTANT

Name the apparatus used in the fractional distillations.

EASY
IMPORTANT

List any two applications of fractional distillations.

EASY
IMPORTANT

Mention any two applications of thin layer chromatography.

MEDIUM
IMPORTANT

Mention any two applications of partition chromatography.

EASY
IMPORTANT

Discuss the principle of the partition chromatography.

EASY
IMPORTANT

Define retardation factor of Thin Layer Chromatography.

EASY
IMPORTANT

The fractional distillations depend on the vapour pressure of the liquid mixture. Justify.

EASY
IMPORTANT

What is the principle involved in the process of differential extraction?

MEDIUM
IMPORTANT

Draw the laboratory setup for steam distillation.

EASY
IMPORTANT

Which of the following apparatus is not used during distillations at reduced pressure?

HARD
IMPORTANT

Describe the setup for distillation at reduced pressure.