In which of the following pairs $\text{A}$ is more stable than $\text{B?}$

Important Questions on Organic Chemistry- Some Basic Principles and Techniques

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th January 2020 Shift 2>Q 25

Among $\left(a\right)-\left(d\right),$ the complexes that can show geometrical isomerism are:
$\left(a\right)$ ${\left[Pt{\left(N{H}_3\right)}_{3}Cl\right]}^{+}$
$\left(b\right)$ ${\left[Pt\left(N{H}_3\right)C{l}_5\right]}^{-}$
$\left(c\right)$ $\left[Pt{\left(N{H}_3\right)}_{2}Cl\left(N{O}_2\right)\right]$
$\left(d\right)$ ${\left[Pt{\left(N{H}_3\right)}_{4}ClBr\right]}^{2+}$

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th January 2020 Shift 2>Q 26

Kjeldahl’s method cannot be used to estimate nitrogen for which of the following compounds?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th January 2020 Shift 1>Q 27

The major products $\mathrm{A}$ and $\mathrm{B}$ in the following reactions are

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th January 2020 Shift 1>Q 28

A flask contains a mixture of isohexane and $3$ -methylpentane. One of the liquids boils at ${63}^{\mathrm{o}}\mathrm{C}$ while the other boils at ${60}^{\mathrm{o}}\mathrm{C}.$ What is the best way to separate the two liquids and which one will be distilled out first?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th January 2020 Shift 1>Q 29

The number of chiral carbon centres in penicillin is _________.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th April 2019 Shift 2>Q 30

The major product of the following reaction is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th April 2019 Shift 2>Q 31

Which of the following compounds will show the maximum 'enol' content?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 22 - Organic Chemistry- Some Basic Principles and Techniques>JEE Main - 8th April 2019 Shift 1>Q 32

The $\mathrm{I}\mathrm{U}\mathrm{P}\mathrm{A}\mathrm{C}$ name of the following compound is: