Intrinsic and extrinsic semiconductors

Distinguish between intrinsic and extrinsic semi-conductors on the basis of energy band diagram.

In extrinsic semiconductors

Distinguish between (i) Intrinsic and Extrinsic semiconductor and (ii) n-type semiconductor and p-type semi-conductor.

In extrinsic semiconductors-

Distinguish between intrinsic and extrinsic semi conductor. ( Given any two points )

Intrinsic Semiconductors

In an intrinsic semiconductor

What is the resistance of and intrinsic of an intrinsic semiconductor at 0K?