Solid State  MCQs

MCQs of Solid State

Showing 91 to 100 out of 151 Questions
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91.
With the help of _____, the light energy can be converted to electricity.
(a) Anode
(b) Cathode
(c) Photodiode
(d) All of these
Answer:

Option (c)

92.
The conductivity of _____ is like metal.
(a) TiO
(b) CrO2
(c) ReO3
(d) All of these
Answer:

Option (d)

93.
The value of Bohr magneton (μβ) is _____
(a) 9.27 × 10-24 Am2
(b) 9.27 × 10-21 Am2
(c) 9.27 × 10-20 Am2
(d) 9.24 × 10-21 Am2
Answer:

Option (a)

94.
_____ is a paramagnetic substance.
(a) Cu2+
(b) Fe3+
(c) Cr3+
(d) All of these
Answer:

Option (d)

95.
_____ is a diamagnetic substance.
(a) NaCl
(b) H2O
(c) N2
(d) All of these
Answer:

Option (d)

96.
_____ shows antiferromagnetism.
(a) MnO
(b) TiO2
(c) O2
(d) All of these
Answer:

Option (a)

97.
_____ shows ferrimagnetism.
(a) Fe3O4
(b) MgFe2O4
(c) ZnFe2O4
(d) All of these
Answer:

Option (d)

98.
_____ shows ferrimagnetism.
(a) ZnFe2O4, Fe3O4
(b)  Fe3O4, O2
(c) MnO, MgFe2O4
(d) MgFe2O4, Cr3+
Answer:

Option (a)

99.
An element 'A' has face-centred cubic structure with edge length equal to 361 pm. The apparent radius of atom 'A' is _____ .
(a) 127.6 pm
(b) 64 pm
(c) 180.5 pm
(d) 160.5 pm
Answer:

Option (a)

100.
Assertion (A) : Graphite is an example of tetragonal crystal system.

Reason (R) : For a tetragonal system, a = b ≠ c, α = β = 90°, γ = 120°.

(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (B) are true, but (R) is not the correct explanation of (A).
(c) (A) is true, but (R) is not true.
(d) Both (A) and (R) are not true.
Answer:

Option (d)

Showing 91 to 100 out of 151 Questions
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