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Q.

Statement - (A) : Resistivity of insulators is about 1022 times the resistivity of metallic conductors.
Statement - (B) : Metals like silver, copper and aluminum have very high values of resistivity.

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a

A and B are true

b

A and B are false

c

A is true, B is false

d

A is false, B is true

answer is C.

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Detailed Solution

Insulator does not allow the flow of electrons and have a resistivity of the order of 10^22 times that of conductors. Metals like silver, copper and aluminum are very good conductors and have low values of resistivity. 

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