Solid State  MCQs

MCQs of Solid State

Showing 61 to 70 out of 151 Questions
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61.
In a body centred unit cell, an atom at the body-centre is shared by _____
(a) 3 unit cell
(b) 4 unit cell
(c) 2 unit cell
(d) 1 unit cell
Answer:

Option (d)

62.
Tetragonal crystal system has the following unit cell dimensions :
(a) a = b = c, α = β = γ = 90°
(b) a = b ≠ c, α = β = γ = 90°
(c) a ≠ b ≠ c, α = β = γ = 90°
(d) a = b ≠ c, α = β = 90°, γ ≠ 90°
Answer:

Option (b)

63.
In a ccp structure, the _____
(a) first and third layers are repeated
(b) first and fourth layers are repeated
(c) second and fourth layers are repeated
(d) first, third and sixth layers are repeated
Answer:

Option (b)

64.
Which type of stacking pattern is found in sodium chloride's crystal lattice ?
(a) A-B-A-B...
(b) A-A-A-A...
(c) A-B-C-A-B-C...
(d) A-B-C-D-A-B-C-D...
Answer:

Option (c)

65.
The co-ordination number of a metal crystallizing in a hexagonal close packed structure is _____
(a) 6
(b) 8
(c) 12
(d) 4
Answer:

Option (c)

66.
A compound of zinc which is white in cold state and yellow in hot state is _____ .
(a) ZnS
(b) ZnCl2
(c) ZnO
(d) ZnSO4
Answer:

Option (c)

67.
In the alloys of copper and silver, _____ defect is observed.
(a) Impurity
(b) Frenkel
(c) Metal excess
(d) Displacement
Answer:

Option (d)

68.
The energy gaps (Eg) between valence band and conduction band for diamond, silicon and germanium are in the order of _____ .
(a) Eg (diamond) > Eg (silicon) > Eg (germanium)
(b) Eg (diamond) < Eg (silicon) < Eg (germanium)
(c) Eg (diamond) = Eg (silicon) = Eg (germanium)
(d) Eg (diamond) > Eg (germanium) > Eg (silicon)
Answer:

Option (a)

69.
Which substance loose ferrimagnetism on heating ?
(a) ZnFe2O4
(b) Co2+
(c) O2
(d) MnO
Answer:

Option (a)

70.
An oxide of transition metal that has conductivity as well as appearance like that of copper is _____ .
(a) Mn2O3
(b) V2O3
(c) ReO3
(d) Ti2O3
Answer:

Option (c)

Showing 61 to 70 out of 151 Questions
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