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Class 12 Chemistry Chapter 1 The Solid State MCQs | Class 12 Chemistry Chapter 1 The Solid State Short Questions and Answers

(1) The number of octahedral void(s) per atom present in a cubic close-packed structure is
[A] 2
[B] 4
[C] 1
[D] 3
Answer: 1
(2) A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is
[A] 144 pm
[B] 204 pm
[C] 288 pm
[D] 408 pm
Answer: 288 pm
(3) AB crystallizes in a body centred cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is
[A] 300 pm
[B] 335 pm
[C] 250 pm
[D] 200 pm
Answer: 335 pm
(4) Percentage of free space in a body centred cubic unit cell is
[A] 32%
[B] 34%
[C] 28%
[D] 20%
Answer: 32%
(5) If NaCl is doped with 10–4 mol % of Sr Cl2, the concentration of cation vacancies will be (NA = 6.02 × 1023 mol–1)
[A] 6.02 × 1016 mol–1
[B] 6.02 × 1017 mol–1
[C] 6.02 × 1014 mol–1
[D] 6.02 × 1015 mol–1
Answer: 6.02 × 1017 mol–1
(6) The appearance of colour in solid alkali metal halides is generally due to
[A] Schottky defect
[B] Frenkel defect
[C] Interstitial position
[D] F-centres
Answer: F-centres
(7) In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells?
[A] 2
[B] 4
[C] 6
[D] 8
Answer: 6

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