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CONDUCTORS AND INSULATORS MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Superconductors have __________
  1.    Moderate value of resistivity
  2.    Temperature-dependent resistivity
  3.    Very high resistivity
  4.    Almost zero resistivity
 Discuss Question
Answer: Option D. -> Almost zero resistivity
Question 2. In semiconductors at room temperature, which of the following is likely to happen?
  1.    The valence band is filled and the conduction band is partially filled
  2.    The valence band is partially empty and the conduction band is partially filled
  3.    The valence band is filled
  4.    The conduction band is empty
 Discuss Question
Answer: Option B. -> The valence band is partially empty and the conduction band is partially filled
Question 3. The energy band gap is maximum in which of the following?
  1.    Semiconductors
  2.    Superconductors
  3.    Metals
  4.    Insulators
 Discuss Question
Answer: Option D. -> Insulators
Question 4. A material that has zero resistance is called
  1.    semiconductor
  2.    Superconductor
  3.    Conductor
  4.    Insulator
 Discuss Question
Answer: Option B. -> Superconductor
Question 5. In N-Type semiconductors, which extra energy level is added?
  1.    Valence level
  2.    Acceptor energy level
  3.    Donor Energy Level
  4.    Conduction level
 Discuss Question
Answer: Option C. -> Donor Energy Level
Question 6. Why is copper a preferred choice in making electrical wires?
  1.    Copper is a good conductor of electricity
  2.    Poor conductors of electricity
  3.    Superconductors
  4.    Insulators
 Discuss Question
Answer: Option A. -> Copper is a good conductor of electricity
Question 7. The energy gap is maximum in
  1.    Conductors
  2.    Semiconductors
  3.    Superconductors
  4.    Insulators
 Discuss Question
Answer: Option D. -> Insulators
Question 8. Conductors are materials that allow
  1.    Allow the flow of heat
  2.    Does not allow heat to flow
  3.    Allows cold to flow
  4.    Stops cold from passing through
 Discuss Question
Answer: Option A. -> Allow the flow of heat
Question 9. Good conductors have many loosely bound
  1.    Electrons
  2.    Atoms
  3.    Protons
  4.    Molecules
 Discuss Question
Answer: Option A. -> Electrons
Question 10. Why are metals useful for making electrical wire?
  1.    Metals do not bend.
  2.    Metals hold much heat.
  3.    Metals are insulators.
  4.    Metals are conductors.
 Discuss Question
Answer: Option D. -> Metals are conductors.

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