JEE Main 2021 — Solid State Question with Solution
From: JEE Main 2021 (Online) 16th March Morning Shift
Question
A certain element crystallises in a bcc lattice of unit cell edge length 27. If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cel in will be ____________. (Round off to the Nearest Integer).
[Assume each lattice point has a single atom]
[Assume = 1.73, = 1.41]
[Assume each lattice point has a single atom]
[Assume = 1.73, = 1.41]
Enter your answer
Show full solutionCorrect answer: 33.12
Correct answer
33.12
Step-by-step explanation
For BCC unit cell,
For FCC unit cell
For FCC unit cell
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This is a previous-year question from JEE Main 2021, covering the Solid State chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.