Match List -I with List-II 
List-I
(Mixtures/Sample)
List-II
(Technique used for purification)
A Glycerol from spent lye (I) Steam distillation
B Chloroform + Aniline  (II) Fractional distillation
C Fractions of crude oil (III) Distillation under reduced pressure
D Aniline+water (IV) Distillation 
Choose the correct answer from the options given below 
Options: (A) (B) (C) (D)
1. III IV II I
2. IV II I III
3. I II III IV
4. I III II IV
Subtopic:  Purification of Organic Compounds |
 70%
From NCERT
NEET - 2023
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The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
1. 2.
3. 4.
Subtopic:  Purification of Organic Compounds |
 63%
From NCERT
NEET - 2022
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Match list-I with list-II:

List-I List-II
(a) Separation of aniline-water mixture (i) Fractional distillation
(b) Separation of aniline-chloroform mixture (ii) Distillation under reduced pressure
(c) Separation of glycerol from spent-lye (iii) Distillation
(d) Separation of different fractions of crude oil (iv) Steam distillation
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (i) (iii) (ii) (iv)
2. (iv) (i) (iii) (ii)
3. (iv) (ii) (iii) (i)
4. (iv) (iii) (ii) (i)
Subtopic:  Purification of Organic Compounds |
 70%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Paper chromatography is an example of:

1. Partition chromatography

2. Thin layer chromatography

3. Column chromatography

4. Adsorption chromatography

Subtopic:  Purification of Organic Compounds |
 51%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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A liquid compound (x) can be purified by steam distillation only if it is:

1. Steam volatile, immiscible with water 

2. Not steam volatile, miscible with water

3. Steam volatile, miscible with water

4. Not steam volatile, immiscible with water

Subtopic:  Purification of Organic Compounds |
 68%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K temperature and 725 mm pressure. If the aqueous tension at 300 K is 25 mm, the percentage of nitrogen in the compound is:

1. 17.36 2. 18.20
3. 16.76 4. 15.76
Subtopic:  Purification of Organic Compounds |
 53%
From NCERT
NEET - 2015
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The best method for the separation of naphthalene and benzoic acid from their mixture is:
1. Sublimation
2. Chromatography
3. Crystallisation
4. Distillation

Subtopic:  Purification of Organic Compounds |
 69%
From NCERT
AIPMT - 2005
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In the steam distillation of toluene, the pressure of toluene in the vapour is:

1. Equal to the pressure of the barometer
2. Less than the pressure of the barometer
3. Equal to vapour pressure of toluene in simple distillation
4. More than the vapour pressure of toluene in simple distillation
Subtopic:  Purification of Organic Compounds |
 57%
From NCERT
AIPMT - 2001
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NEET 2023 - Target Batch - Aryan Raj Singh
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