Scribd
Upload
8 views2 pages

Solid State JEE Mock Test

This document contains a mock test consisting of 25 multiple-choice questions (MCQs) related to solid-state chemistry concepts, including crystal structures, unit cells, packing efficiency, and types of defects. Each question presents options that test knowledge on topics such as BCC and FCC structures, coordination numbers, and properties of ionic crystals. The test is designed for students preparing for the JEE standard examination.

Uploaded by

pulaksahoo99
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
8 views2 pages

Solid State JEE Mock Test

This document contains a mock test consisting of 25 multiple-choice questions (MCQs) related to solid-state chemistry concepts, including crystal structures, unit cells, packing efficiency, and types of defects. Each question presents options that test knowledge on topics such as BCC and FCC structures, coordination numbers, and properties of ionic crystals. The test is designed for students preparing for the JEE standard examination.

Uploaded by

pulaksahoo99
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 2

Solid State – JEE Standard Mock Test

(25 MCQ)
1. The number of atoms per unit cell in BCC is:
(A) 1 (B) 2 (C) 4 (D) 8

2. In a crystal lattice, the atoms A and B are present in 1:1 ratio. If A occupies corners, B
occupies:
(A) Centre (B) Edge centres (C) Face centres (D) Body centre

3. The coordination number in a simple cubic lattice is:


(A) 6 (B) 8 (C) 12 (D) 4

4. The structure of NaCl is:


(A) FCC(B) BCC (C) Simple cubic (D) Tetragonal

5. The packing efficiency in FCC is approximately:


(A) 52% (B) 60% (C) 68% (D) 74%

6. The type of void formed in FCC by the small sphere is:


(A) Tetrahedral (B) Octahedral (C) Cubic (D) Square planar

7. Number of tetrahedral voids per atom in FCC structure:


(A) 1 (B) 2 (C) 4 (D) 8

8. Radius ratio for tetrahedral voids is:


(A) 0.155 (B) 0.225 (C) 0.414 (D) 0.732

9. The crystal defect not changing density is:


(A) Schottky (B) Frenkel (C) Vacancy (D) Interstitial

10. Which is true for Frenkel defect?


(A) Shown by AgCl (B) Decreases density (C) Found in NaCl (D) Shown by KCl

11. For BCC, the relation between 'a' (edge length) and 'r' (radius) is:
(A) a = 2r (B) a = 4r/√3 (C) a = 4r/√2 (D) a = √2 r

12. Cesium chloride crystal structure is:


(A) FCC(B) BCC (C) Simple cubic (D) Body centred cubic with Cs+ in the centre

13. The number of atoms touching each atom in BCC is:


(A) 4 (B) 6 (C) 8 (D) 12

14. The density of a unit cell is independent of:


(A) Avogadro’s number (B) Molar mass(C) Crystal structure (D) Temperature
15. If 'r' is the radius of the atom, then edge length of FCC will be:
(A) 2r (B) 2√2 r (C) 4r/√3 (D) 4r/√2

16. Which type of defect increases electrical conductivity?


(A) Frenkel (B) Schottky (C) Metal excess defect(D) Metal deficiency defect

17. Ionic solids are non-conducting in solid state because:


(A) Ions are free (B) Ions are fixed (C) Electrons move freely (D) Covalent
bonds present

18. The maximum packing efficiency is shown by:


(A) Simple cubic (B) BCC (C) FCC(D) Diamond

19. The unit cell having atoms at corners and face centres only is:
(A) Simple cubic (B) FCC(C) BCC (D) Hexagonal

20. Which of the following is an example of a covalent crystal?


(A) NaCl (B) Diamond (C) Ice (D) Graphite

21. The radius ratio for octahedral voids is:


(A) 0.155 (B) 0.225 (C) 0.414 (D) 0.732

22. In ZnS, the structure is:


(A) NaCl type (B) Zn blende (C) Wurtzite (D) Both B and C

23. Which defect decreases density of the crystal?


(A) Frenkel (B) Schottky (C) Metal excess (D) Metal deficiency

24. The total number of voids in close packing of N spheres:


(A) N (B) 2N (C) N/2 (D) 4N

25. Which is not a property of ionic crystals?


(A) High melting point (B) Hardness (C) Conductivity in molten state (D)
Malleability

You might also like