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Question

What is the property of not being extremely addictive on its mirror image of a substance?

This question was previously asked in
RPF SI 2018 Question Paper PDF (10-Jan-2019) (Shift 1)
The correct answer is

Charity

The stem is a translation of 'the property of a substance of being non-superimposable on its mirror image'. This property is called chirality ('Charity' in the options).

A chiral molecule, typically one with a carbon atom bonded to four different groups, cannot be placed over its mirror image so that all atoms coincide, just as a left hand cannot be superimposed on a right hand. Such mirror-image pairs are called enantiomers and are optically active.

Molecules that are superimposable on their mirror images are achiral; symmetry (a plane or centre of symmetry) generally makes a molecule achiral.

Hence, the answer is chirality (Charity).

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