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Write any two differences between fractional crystallisation and crystallisation.
Important Questions on Organic Chemistry- Some Basic Principles and Techniques
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The distillation technique most suited for separating glycerol from spent - lye in the soap industry is:
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Given below are two statements:
Statement : A mixture of chloroform and aniline can be separated by simple distillation.
Statement : When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.
In the light of the above statements, choose the most appropriate answer from the options given below:
MEDIUM
The correct match between items of List-I and List-II is
| List - I | List - II | ||
| (A) | Coloured impurity | (P) | Steam distillation |
| (B) | Mixture of o – nitrophenol and p –nitrophenol | (Q) | Fractional distillation |
| (C) | Crude Naphtha | (R) | Charcoal treatment |
| (D) | Mixture of glycerol and sugars | (S) | Distillation under reduced pressure |
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Which of the following mixtures can be separated by simple distillation?
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Glycerol is separated in soap industries by :
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Aniline is insoluble in water and possesses a vapour pressure of at . It can be conveniently purified by
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The organic compound which can be purified by steam distillation is :
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A flask contains a mixture of isohexane and -methylpentane. One of the liquids boils at while the other boils at What is the best way to separate the two liquids and which one will be distilled out first?
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The most suitable method of separation of mixture of ortho and para-nitrophenol is:
HARD
Which of the following is the example of crystallisation process?
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Name and discuss the principle of the method used to separate a mixture of two organic compounds having different solubilities.
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Give a brief description of the principle of crystallisation. Give an example
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List the properties of solvents which make them suitable for crystallization.
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How will you separate two components when: They are soluble in the same solvent.
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Solid substances soluble in a suitable solvent are purified by _____.
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Fractional crystallisations is carried out to separate a mixture of
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The two solids of variable solubilities are separated by the process of ______
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Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and
MEDIUM
The best method for the separation of naphthalene and benzoic acid from their mixture is
HARD
The best method for the separation of naphthalene and benzoic acid from their mixture is-
