Question

(ii) Why are alloys used in heating devices like electric iron, toasters, immersion rods, etc.?
1) Alloys have high resistivity.
ii) Alloys do not oxidise or burn at high temperature.
i) Alloys have high conductivity thus allow high current through it
(a) III only
(b) I only
(c) II and III
iv) I and II
​

Answer 1

Explanation:

Alloys generally have high melting point as compared to the individual elements. The electrical heating devices must have high melting point so that they do not melt even at high temperature when an electrical current passes through the device. Thus alloys are used in electrical heating device.