1. Semiconductor acts as an insulator in the presence of impurities.
Correct Answer is : FALSE
2. How does a semiconductor behave at absolute zero?
Correct Answer is : Insulator
3. How is the resistance of semiconductor classified?
Correct Answer is : Negative temperature co-efficient
4. What are the charge carriers in semiconductors?
Correct Answer is : Electrons and holes
5. Which of the following is known as indirect band gap semiconductors?
Correct Answer is : Germanium