Match List-I with List-II List-I (Mixture) List-II (Purification Process) A Chloroform & Aniline I Steam distillation B Benzoic acid & Napthalene II Sublimation C Water & Aniline III Distillation D Napthalene & Sodium chloride IV Crystallisation

A - III , B - IV , C - I , D - II

A - IV , B - III , C - I , D - II

A - III , B - I , C - IV , D - II

A - III , B - IV , C - II , D - I

Given below are two statements: Statement I: Sulphanilic acid gives esterification test for carboxyl group. Statement II: Sulphanilic acid gives red colour in Lassigne’s test for extra element detection. In the light of the above statements, choose the most appropriate answer from the options given below:

Statement I is incorrect but Statement II is correct.

Statement I is correct but Statement II is incorrect.

Both Statement I and Statement II are incorrect

Both Statement I and Statement II are correct

Match items of column I and II Column I (Mixture of compounds) Column II (Separation Technique) A. H 2 O / CH 2 Cl 2 i. Crystallization B. ii. Differential solvent extraction C. Kerosene/Naphthalene iii. Column chromatography D. C 6 H 12 O 6 / NaCl iv. Fractional Distillation

A - ( ii ) , B - ( iii ) , C - ( iv ) , D - ( i )

A - ( iii ) , B - ( iv ) , C - ( ii ) , D - ( i )

A - ( i ) , B - ( iii ) , C - ( ii ) , D - ( iv )

A - ( ii ) , B - ( iv ) , C - ( i ) , D - ( iii )

MEDIUM

JEE Main

IMPORTANT

Earn 100

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance $A$ and substance $B$ from the base line are $3.25 cm . 2.08 cm$ and $1.05 cm$ . respectively. The ratio of $R_{f}$ values of $A$ to $B$ is

100% studentsanswered this correctly

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 26 July 2022 Shift 1>Q 152

Which technique among the following, is most appropriate in separation of a mixture of

100 mg

p

-nitrophenol and picric acid?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 26 July 2022 Shift 1>Q 153

Which of the following compounds is not aromatic?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 26 July 2022 Shift 2>Q 154

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 26 July 2022 Shift 2>Q 155

Which of the following is not an example of benzenoid compound?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 26 July 2022 Shift 2>Q 156

Total number of isomers (including stereoisomers) obtain on monochlorination of methylcyclohexane is

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2022 Shift 1>Q 157

In Carius method of estimation of halogen.

0.45 g

of an organic compound gave

0.36 g

AgBr

. Find out the percentage of bromine in the compound.
(Molar masses :

AgBr = 188 g {mol}^{- 1} : Br = 80 g {mol}^{- 1}

)

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2022 Shift 1>Q 158

Optical activity of an enantiomeric mixture is

+ 12.6 °

and the specific rotation of

(+)

isomer is

+ 30 °

. The optical purity is____

%

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2022 Shift 2>Q 159

Match List-I with List-II

	List-I (Mixture)		List-II (Purification Process)
A	Chloroform & Aniline	I	Steam distillation
B	Benzoic acid & Napthalene	II	Sublimation
C	Water & Aniline	III	Distillation
D	Napthalene & Sodium chloride	IV	Crystallisation

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the base line are 3.25 cm.2.08 cm and 1.05 cm. respectively. The ratio of Rf values of A to B is

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance $A$ and substance $B$ from the base line are $3.25 cm . 2.08 cm$ and $1.05 cm$ . respectively. The ratio of $R_{f}$ values of $A$ to $B$ is