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

( A ) - ( R ) , ( B ) - ( P ) , ( C ) - ( Q ) , ( D ) - ( S )

( A ) - ( R ) , ( B ) - ( S ) , ( C ) - ( P ) , ( D ) - ( Q )

( A ) - ( P ) , ( B ) - ( S ) , ( C ) - ( R ) , ( D ) - ( Q )

( A ) - ( R ) , ( B ) - ( P ) , ( C ) - ( S ) , ( D ) - ( Q )

The correct order for acid strength of compounds CH ≡ CH , CH 3 - C ≡ CH and CH 2 = CH 2 is as follows:

HC ≡ CH > CH 3 - C ≡ CH > CH 2 = CH 2

CH 3 - C ≡ CH > CH ≡ CH > CH 2 = CH 2

CH ≡ CH > CH 2 = CH 2 > CH 3 - C ≡ CH

CH 2 - C ≡ CH > CH 2 = CH 2 > HC ≡ CH

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 )

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IMPORTANT

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The correct IUPAC name of the following compound

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 15th April 2018>Q 102

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

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 12th January 2019 Shift 1>Q 103

The correct order for acid strength of compounds

CH \equiv CH, {CH}_{3} - C \equiv CH

and

{CH}_{2} = {CH}_{2}

is as follows:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 12th April 2019 Shift 2>Q 104

The IUPAC name for the following compound is:

EASY

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 12th April 2019 Shift 1>Q 105

An organic compound ‘A’ is oxidized with

N a_{2} O_{2}

followed by boiling with

H N O_{3} .

The resultant solution is then treated with ammonium molybdate to yield a yellow percipitate. Based on a above observation, the element present in the given compound is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 12th April 2019 Shift 1>Q 106

The increasing order of the

{p K}_{b}

of the following compund is:

(A)

(B)

(C)

(D)

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 11th April 2015>Q 107

Match the organic compounds in column -

I

with the Lassaigne's test result in column -

II

appropriately:

	Column – $I$		Column - $II$
A.	Aniline	i.	Red colour with $F e C l_{3}$
B.	Benzene sulfonic acid	ii.	Violet color with sodium nitroprusside
C.	Thiourea	iii.	Blue color with and acidic solution of $F e S O_{4}$

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 11th April 2015>Q 108

Which of the following pairs of compounds are positional isomers?

MEDIUM

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 10th January 2019 Shift 2>Q 109

What is the IUPAC name of the following compound?

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The correct IUPAC name of the following compound is :

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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The correct IUPAC name of the following compound

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