The one that will show optical activity is:

(en = ethane-1,2-diamine)

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JEE Mains Previous Paper 1 (Held On: 09 Apr 2019 Shift 1)
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  1. 09.04.2019 Shift 1 Synergy JEE Mains D111
  2. 09.04.2019 Shift 1 Synergy JEE Mains D112
  3. 09.04.2019 Shift 1 Synergy JEE Mains D114
  4. 09.04.2019 Shift 1 Synergy JEE Mains D113

Answer (Detailed Solution Below)

Option 3 : 09.04.2019 Shift 1 Synergy JEE Mains D114
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JEE Main 04 April 2024 Shift 1
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Detailed Solution

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Concept:

Optical isomers are mirror images that cannot be superimposed on one another. These are called as enantiomers.

09.04.2019 Shift 1 Synergy JEE Mains D115

This structure does not contain plane of symmetry hence it is optically active, rest of all options has plane of symmetry and they are optically inactive i.e., if we look upon the mirror image of the given options, it is same for all except option (c). Hence, only option (c) is optically active.

No plane of symmetry or centre of symmetry. Hence, option (c) is optically active.

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