The IUPAC name of the following compound is:

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th January 2020 Shift 2>Q 39

The correct order of stability for the following alkoxides is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th January 2020 Shift 2>Q 40

A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of $\left(\mathrm{A}\right)$ benzanilide $\left(\mathrm{B}\right)$ aniline and $\left(\mathrm{C}\right)$ acetophenone. When the column is eluted with a mixture of solvents, hexane:ethyl acetate $\left(20:80\right)$ , the sequence of obtained compounds is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th January 2020 Shift 2>Q 41

In the following reaction sequence, structures of $\mathrm{A}$ and $\mathrm{B}$ are, respectively

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th January 2020 Shift 1>Q 42

A solution of $\mathrm{m}-$ chloroaniline, $\mathrm{}\mathrm{m}-$ chlorophenol, and $\mathrm{m}-$ chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of $\mathrm{N}\mathrm{a}\mathrm{H}\mathrm{C}{\mathrm{O}}_3$ to give fraction $\mathrm{A}$ . The leftover organic phase was extracted with a dilute $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ solution to give a fraction $\mathrm{B}$ . The final organic layer was labelled as a fraction $\mathrm{C}$ . Fractions $\mathrm{A},\mathrm{}\mathrm{B}$ and $\mathrm{C},\mathrm{}$ contain respectively:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th January 2020 Shift 1>Q 43

The increasing order of $\mathrm{p}{\mathrm{K}}_{\mathrm{b}}$ for the following compounds will be :

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th April 2013>Q 44

A solution of $(-)1-\mathrm{chloro}-1-\mathrm{phenylethane}$ in toluene racemises slowly in the presence of a small amount of SbCl₅, due to the formation of :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 7th April 2013>Q 45

The order of stability of the following carbocations:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 6th April 2014>Q 46

For the estimation of nitrogen, $1.4 \mathrm{g}$ of an organic compound was digested by the Kjeldahl method and the evolved ammonia was absorbed in $60 \mathrm{ml}$ of $\frac{\text{M}}{10}$ sulphuric acid. The unreacted acid required $20 \mathrm{ml}$ of $\frac{\text{M}}{10}$ sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is