Sawaal
2
Q:

Which of the following is not a semiconductor?

A) CdS B) NaCl
C) Si D) Ge

Answer:   B) NaCl



Explanation:

Semiconductors are those materials that are neither good conductors nor the good insulators of heat and electricity. Silicon (Si), Germanium (Ge) and Cadmium Sulphide (CdS) are semiconductors which work as conductors in some special conditions only.

Subject: Chemistry
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