Given below are two statements : Statement I : Hyperconjugation is a permanent effect. Statement II : Hyperconjugation in ethyl cation CH 3 - C + H 2 involves the overlapping of C sp 2 - H 1 s bond with empty 2 p orbital of other carbon. Choose the correct option:

Statement I is correct but statement II is false

Both statement I and statement II are false

Statement I is incorrect but statement II is true

Both Statement I and statement II are true.

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 )

HARD

JEE Main

IMPORTANT

Earn 100

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?

40% 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 - 2nd April 2017>Q 70

The correct sequence of reagents for the following conversion will be

Question Image

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 2nd April 2017>Q 71

Which of the following molecules is least resonance stabilized?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2021 Shift 2>Q 72

Which one of the following set of elements can be detected using sodium fusion extract?

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 2021 Shift 2>Q 73

Given below are two statements :

Statement I : Hyperconjugation is a permanent effect.

Statement II : Hyperconjugation in ethyl cation $({CH}_{3} - \overset{+}{C} H_{2})$ involves the overlapping of $C_{{sp}^{2}} - H_{1 s}$ bond with empty $2 p$ orbital of other carbon.

Choose the correct option:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2021 Shift 1>Q 74

Staggered and eclipsed conformers of ethane are:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 July 2021 Shift 1>Q 75

Question Image

The correct order of stability of given carbocation is:

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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 - 27 August 2021 Shift 1>Q 76

In Carius method for estimation of halogens, $0.2 g$ of an organic compound gave $0.188 g$ of $AgBr .$ The percentage of bromine in the compound is __________. (Nearest integer)

[Atomic mass: $Ag = 108, Br = 80$ ]

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 27 August 2021 Shift 1>Q 77

The number of moles of

CuO,

that will be utilized in Dumas method for estimating nitrogen in a sample of

57.5 g

N, N -

dimethylaminopentane is ________

\times 10^{- 2} .

(Nearest integer)

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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