Topic: Solid State, Test No.: 05, Total MCQs: 10
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Question 1 |
Number of atoms
per unit cell of bcc is
1 | |
2 | |
4 | |
8 |
Question 2 |
Number of unit
cells in 4 g of X (atomic mass = 40) which crystallize in bcc pattern is (NA
= Avogadro number).
0.1 NA | |
2 ´ 0.1 NA | |
 NA | |
2 ´ NA |
Question 3 |
Relationship
between atomic radius (r) and the edge length a of a body centred cubic unit
cell is
r =  | |
r =  | |
r =  | |
r =  |
Question 4 |
Silver (atomic weight = 108 g mol–1) has a density of
10.5 g cm–3. The number of silver atoms on a surface of area 10–12 m2 can be expressed in
scientific notation as y × 10x. The value of x is
13 | |
9 | |
7 | |
5 |
Question 5 |
The coordination
number of a metal crystallizing in a hexagonal close packing (hcp) structure is
12 | |
8 | |
6 | |
7 |
Question 6 |
The
coordination number of Al in the crystalline state of AlCl3 is
4 | |
6 | |
8 | |
10 |
Question 7 |
The crystal system
of a compound with unit cell dimensions, a = 0.387, b = 0.387 and c = 0.504 nm
and a = β = 90° and γ = 120° is
cubic | |
hexagonal | |
orthorhombic | |
rhombohedral |
Question 8 |
The crystal with
metal deficiency defect is
NaCl | |
FeO | |
KCl | |
ZnO |
Question 9 |
The cubic unit cell of a metal (molar mass = 63.55 g mol–1) has an edge length of
362 pm. Its density is 8.92 g.cm3. The type of unit cell is:
Body centred | |
Face centred | |
Primitive | |
End centred |
Question 10 |
Total number of
tetrahedral and octahedral voids in 0.5 mol of a compound forming hcp structure
are:
6.022 × 1023 | |
3.011 × 1023 | |
9.033 × 1023 | |
4.516 × 1023 |
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