Solid State MCQs | Question – Paper 4


Topic: Solid State, Test No.: 04, Total MCQs: 10

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Question 1
If the distance between Na+ and Cl ions in sodium chloride crystal is X pm, the length of the edge of the unit cell is
A
4 X pm
B
2 X pm
C
X/2 pm
D
X/4 pm
Question 2
If Z is the number of atoms in the unit cell that represents the closest packing sequence ABC ABC _____, the number of tetrahedral voids in the unit cell is equal to
A
Z
B
2Z
C
Z/2
D
Z/4
Question 3
In a face centred cubic (fcc) arrangement, the number of atoms per unit cell is
A
8
B
4
C
2
D
1
Question 4
In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is
A
A2B5
B
A2B
C
AB2
D
A2B3
Question 5
In a triclinic crystal:
A
a = b = c, a = b = g ≠ 90°
B
a ≠ b = c, a = b = g = 90°
C
a ≠ b ≠ c, abg ≠ 90°
D
a ≠ b ≠ c, a = g = 90°b
Question 6
In AgBr, there can occur
A
only Schottky defect
B
only Frenkel defect
C
Both (a) and (b)
D
Neither (a) nor (b)
Question 7
In an antifluorite structure, cations occupy
A
tetrahedral voids
B
centre of cube
C
octahedral voids
D
corners of cube
Question 8
In Na2O having antifluorite structure
A
Oxide ions have a cubic close packed arrangement and Na+ occupy all the eight tetrahedral voids.
B
Oxide ions have a cubic close packed arrangement and Na+ occupy all the octahedral voids
C
Na+ ions have a cubic close arrangement and O2- occupy all the octahedral voids
D
Na+ ions have a cubic close arrangement and O-2 occupy all the tetrahedral voids.
Question 9
In NaCl crystal each Cl ion is surrounded by
A
4Na+ ions
B
6Na+ ions
C
1Na+ ions
D
2Na+ ions
Question 10
Match Column A with B and select the correct option.
  Column A   Column B
A. Ionic solid I. NaCl
B. Metallic solid II. Fe
C. Covalent solid III. C (graphite)
D. Molecular solid IV. Dry ice
A
A - II, B - I, C - IV, D - III
B
A - I, B - II, C - III, D - IV
C
A - III, B - II, C - I, D - IV
D
A - II, B - IV, C - I, D - III
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