MCQ Questions Class 12 Chemistry | Chapter 1 Solid State Class 12 MCQ with answer

Solid State Class 12 MCQ on Topic- Semiconductor

Q.Semiconductor have conductivities range from

1. 10^-20 to 10^-7
2. 10^-6 to 10⁴
3. 10^-20 to 10^-10
4. 10^-10 to 10^-20

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Q.Lowest or Vacant band is called

1. Valence band
2. Conduction band
3. Forbidden band
4. None

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Q.For electrical conductance, an electron jump from

1. Conduction band to forbidden band
2. Conduction band to valence band
3. Valence band to conduction band
4. Valence band to forbidden band

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Q.Which is pure semiconductor-

1. Extrinsic
2. Intrinsic
3. N – type
4. P – type

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Q.N –type semiconductor contain

1. Trivalent impurity
2. Tetravalent impurity
3. Pentavalent impurity
4. None

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Q.P- type semiconductor contain

1. Trivalent impurity
2. Tetravalent impurity
3. Pentavalent impurity
4. None

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Q.Current carrier in n–type semiconductor is

1. Electron
2. Hole
3. Both
4. Ions

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Q.Current carrier in p–type semiconductor is

1. Electron
2. Hole
3. Both
4. Ions

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Q.P- type material is electrically

1. Positive
2. Negative
3. Neutral
4. None

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Q.The most symmetrical and unsymmetrical systems are respectively

1. Tetragonal, Cubic
2. Triclinic, Cubic
3. Orthorhombic, cubic
4. Cubic, Triclinic

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Q.The unit cell with dimension a = b = g = 90,  a ≠ b ≠ c

1. Cubic
2. Orthorhombic
3. Tetrahedral
4. Hexagonal

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Q.Which packing has 26% empty space

1. HCP
2. CCP
3. BCC
4. Both a & b

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