question_answer

When the electrical conductivity  of a semi-  conductor  is due to the breaking of its covalent bonds, then the semiconductor is said to be [AIIMS 1997; KCET (Engg.) 2002]

A)            Donar                                      

B)            Acceptor

C)            Intrinsic                                  

D)            Extrinsic

Correct Answer: C

Solution :

                   \[\begin{matrix}   \text{Intrinsic} \\   \text{semiconductor} \\ \end{matrix}\]               Conductivity is due to the                    breaking of covalent bond \[\begin{matrix}   \text{Extrisnsic} \\   \text{semiconductor} \\ \end{matrix}\]               Conductivity is due to the breaking of covalent bond and excess of charge carriers due to impurity.