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Standard XII
Chemistry
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A semiconduct...
Question
A semiconductor of Ge can be made p-type by adding :
A
trivalent impurity
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B
tetravalent impurity
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C
pentavalent impurity
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D
divalent impurity
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Solution
The correct option is
A
trivalent impurity
When a semiconductor is doped with a trivalent impurity (like B, Al), the p-type semiconductor is obtained.
n-type semiconductor is obtained by adding pentavalent impurity.
Hence, the correct option is
A
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