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The Solid State — NEET/JEE Questions, Notes & Weightage

Class 12 Physical Chemistry NEET weightage: Medium 886 questions

Covers crystal lattices, unit cells (simple cubic, bcc, fcc), packing efficiency, and defects in solids. Packing-efficiency and density numericals based on unit-cell type are this chapter's most consistent NEET/JEE contribution.

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Frequently asked questions

What numerical type is most common?

Calculating packing efficiency or density from a given unit cell type (especially fcc) is the most frequently repeated numerical format.

Are point defects (Schottky, Frenkel) tested?

Yes, as conceptual/definitional questions — distinguishing Schottky defects (ion pairs missing) from Frenkel defects (ion displaced, not missing) is a common question.

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