The correct statements regarding element...

The correct statements regarding elements of symmetry and chirality of compound is

A compound with either plane or centre of symmetry is always achiral

Centre of symmetry has no role to play in chirality of a compound

Presence of an axis of symmetry destroy chirality

A compound with an axis of symmetry simutaneously contain centre of symmetry.

Text Solution

Verified by Experts

The correct Answer is:

Presence of either plane of symmetrical or centre of symmetry. Optical activity of one half of the molecule is exactely cancelled by other half and is internally compensated.

Topper's Solved these Questions

SOME BASIC PRINCIPALS OF ORGANIC CHEMISTRY
A2Z|Exercise Confirmational Isomerism|25 Videos
SOME BASIC PRINCIPALS OF ORGANIC CHEMISTRY
A2Z|Exercise Section B - Assertion Reasoning|25 Videos
SOME BASIC PRINCIPALS OF ORGANIC CHEMISTRY
A2Z|Exercise Geometrical Isomerism|47 Videos
SOME BASIC CONCEPTS OF CHEMISTRY
A2Z|Exercise Section D - Chapter End Test|30 Videos
STATES OF MATTER
A2Z|Exercise Section D - Chapter End Test|30 Videos

The correct statement regarding entropy is

at absolute zero temperature, entropy of a perfectly crystalline solid is zero

at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

at absolute zero temperature, the entropy of all crystalline substance is zero

at `0^(@)C` the entropy of a perfect crystalline solid is zero.

The correct statement regarding entropy is:

At absolute zero temperature, entropy of a perfectly crystalline solid is zero

At absolute zero temperature, the entropy of a perfectly crystalline substance is +ve

At absolute zero temperature, the entropy of all crystalline substances is zero

At `0^(@)C` the entropy of a perfectly crystalline solid is zero.

The correct statement regarding electrophile is

electrophile is a negatively charged species and canform a bond by accepting a pair of electrons from another electrophite

electrophiles are generally neutral species and can form a bond by accepting a pair of electrons from a nucleophile

electrophile can be either neutral or positively charged species and can form a bond by accepting a pair of electrons from a nucleophile

electrophile is a negatively charged species and can form a bond by accepting a pair of electrons from a nucleophile.