In which of the following industries is mica used as a raw material?

The correct answer is (d), Electrical. Mica is a mineral that is used in a variety of electrical applications, including capacitors, transformers, and switches. It is a good insulator and has a high dielectric strength, which makes it ideal for these applications. Mica is also used in some non-electrical applications, such as roofing and cosmetics.

(a) Iron and Steel: Mica is not used as a raw material in the iron and steel industry.
(b) Toys: Mica is not used as a raw material in the toy industry.
(c) Glass and Pottery: Mica is not used as a raw material in the glass and pottery industry.