1) Select the related statement about semiconductors a) conductivity between conductors and insulators b) charge carriers are holes c) copper and gold are pure semiconductors d) consists of S and Q materials 2) The process of inserting foreign matter is known as a) mixture of compounds b) atomic structure c) Doping d) Coating 3) State the characteristics of a p-type semiconductor a) The majority charge carrier is electrostatic b) Conductivity increases as the temperature decreases c) The trivalent atom is the dopant d) The majority charge carriers are free electrons 4) Select the corresponding pair that acts as the foreign atom of the n-type semiconductor a) Indium and gallium b) Arsenic and antimony c) Boron and phosphorus d) Antimony and gallium 5) All elements are doping substances except a) Indium b) Gallium c) Antimony d) Germanium

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