Stereochemistry & Isomerism
ChemistryClass 12
Tell meso from racemic, spot chiral centres, and know when a molecule is optically active. A classic NEET trap. 2-3 questions every year.
Key Topics in this Chapter
ChiralityMeso compoundsRacemic mixtureOptical activityPlane of symmetry
Interactive 3D Labs for this Chapter
meso vs (±)
3Dmeso vs (±): the stereochemistry of addition
High-yield (isomerism + addition reactions, ~2–3 Q every year) NEET questions
Pseudo-chiral centre
3DPseudo-Chiral Centre — Pentane-2,3,4-triol in 3D
High-yield (stereoisomer counting, ~1–2 Q every year) NEET questions
No chiral C, still active
3DOptical Activity Without a Chiral Carbon — Allenes, Biphenyls & N
High-yield (optical activity traps, ~1 Q every year) NEET questions
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