Semiconductor MCQs
Question 1: Which of the following is a semiconductor material?
- A) Copper
- B) Silicon
- C) Iron
- D) Silver
Answer: B) Silicon
Question 2: What type of semiconductor is created by adding pentavalent impurities?
- A) Intrinsic
- B) P-type
- C) N-type
- D) None of the above
Answer: C) N-type
Question 3: Which process is used to grow a single crystal of silicon?
- A) Electroplating
- B) Czochralski process
- C) Sputtering
- D) Photolithography
Answer: B) Czochralski process
Question 4: What is the primary charge carrier in a P-type semiconductor?
- A) Electrons
- B) Holes
- C) Neutrons
- D) Protons
Answer: B) Holes
Question 5: What is the energy gap of Silicon at room temperature?
- A) 0.7 eV
- B) 1.1 eV
- C) 1.5 eV
- D) 2.1 eV
Answer: B) 1.1 eV
Question 6: Which of the following is not a property of an intrinsic semiconductor?
- A) Pure form
- B) Equal number of electrons and holes
- C) High conductivity
- D) No impurities
Answer: C) High conductivity
Question 7: The majority charge carriers in an N-type semiconductor are:
- A) Holes
- B) Electrons
- C) Neutrons
- D) Protons
Answer: B) Electrons
Question 8: What happens to the conductivity of a semiconductor with increasing temperature?
- A) Increases
- B) Decreases
- C) Remains the same
- D) None of the above
Answer: A) Increases
Question 9: What is the purpose of doping in semiconductors?
- A) Increase resistivity
- B) Decrease conductivity
- C) Control electrical properties
- D) None of the above
Answer: C) Control electrical properties
Question 10: In which device is a P-N junction used?
- A) Resistor
- B) Capacitor
- C) Diode
- D) Inductor
Answer: C) Diode