Silicon doped with Boron is a n-type semi conductor.
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B
Silicon doped with Arsenic is a p-type semiconductor.
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C
Semiconductors are good conductors of electricity.
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D
Electrical conductivity of semiconductors increases with increasing temperature.
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Solution
The correct option is D Electrical conductivity of semiconductors increases with increasing temperature.
The electrical conductivity of a semiconductor increases exponentially with an increase in temperature because as temperature is increased, more electrons get energy and can jump to the conduction band which increases conductivity.