Answer :

(a) Material Q with resistivity 2.63×10-8 ohm-m can be used for making electric wires because it has very low resistivity.

(b) Material R with resistivity 1.0 ×1015 ohm-m can be used for making handle of soldering iron because it has very high resistivity.

(c) Material P with resistivity 2.3 × 103 ohm-m can be used for making solar cell because it is a semiconductor.

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