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Crystallography

4 PYQ across 1 exam · 2026–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

20264 PYQs
ESEQ21
How many total number of lattice parameters are required to fully specify Rhombohedral crystal system ?…
ESEQ22
If a and c represent, respectively, the short and long unit cell dimensions for Hexagonal crystal, the ideal c/a ratio should be…
ESEQ23
In characteristics of cubic crystal, the planes and directions having the same indices are always at the angle of…
ESEQ24
Consider the following statements regarding Face Centered Cubic Crystal Structure : 1. There are eight corner atoms, six face atoms and no i…
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