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Friday, 9 October

JEE Main Chemistry · The Solid State

Crystal Lattices in JEE Main

Crystal Lattices (Chemistry, The Solid State) came 9 times in 9 of the 42 JEE Main shifts Lumi analysed, across 7 distinct ideas. 0 of them came in 2024–26; it was last asked in 2023.

Questions
9
in 9 shifts
Ideas asked
7
2 asked more than once
Numerical answer
5
56% of its questions
Pattern
Asked most years
rarely asked since 2024
Questions each year
0241’171’202’212’223’230’240’250’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 3Medium 6Hard 0

Format

  • Numerical value5 Q
  • Single correct4 Q
Ideas inside the topic
7 ideas
Where it sits

Part of The Solid State, which had 10 questions in all. Crystal Lattices accounts for 90% of them. In Lumi's JEE taxonomy it belongs to Inorganic Chemistry.

Every question

All 9 Crystal Lattices questions

Newest first, each with its options and official answer.

  1. 6 Apr 2023, Shift 1 · Q61A compound is formed by two elements X and Y. The element Y forms cubic close packed arrangement and those of element X occupy one third…MediumSingle correct
  2. 11 Apr 2023, Shift 1 · Q82An atomic substance A of molar mass 12 g mol−112\ \mathrm{g\ mol^{-1}} has a cubic crystal structure with edge length of 300 pm. The no. of atoms…MediumNumerical value
  3. 13 Apr 2023, Shift 2 · Q82Sodium metal crystallizes in a body centred cubic lattice with unit cell edge length of 4 Å. The radius of sodium atom is ______…EasyNumerical value
  4. 28 Jul 2022, Shift 1 · Q82An element M crystallises in a body centred cubic unit cell with a cell edge of 300 pm. The density of the element is…MediumNumerical value
  5. 24 Jun 2022, Shift 1 · Q81Atoms of element X form hcp lattice and those of element Y occupy 23\frac{2}{3} of its tetrahedral voids. The percentage of element X in…MediumNumerical value
  6. 16 Mar 2021, Shift 2 · Q52Ga (atomic mass 70 u) crystallizes in a hexagonal close packed structure. The total number of voids in 0.581 g of Ga is ________…MediumNumerical value
  7. 18 Mar 2021, Shift 1 · Q31In a binary compound, atoms of element A form a hcp structure and those of element M occupy 2/3 of the tetrahedral voids of the hcp…EasySingle correct
  8. 6 Sep 2020, Shift 2 · Q41A crystal is made up of metal ions 'M1_1' and 'M2_2' and oxide ions. Oxide ions form a ccp lattice structure. The cation 'M1_1'…MediumSingle correct
  9. 2 Apr 2017 (offline) · Q35A metal crystallises in a face centred cubic structure. If the edge length of its unit cell is 'a', the closest approach between two atoms…EasySingle correct