Which of the following non metallic mineral is used in the electrical industry?

mica

The correct answer is Option 2: mica

Mica is a non-metallic mineral widely used in the electrical and electronic industries because it is a good insulator and can withstand high temperatures. Copper and aluminium are metallic minerals, not non-metallic minerals.

NCERT: "Copper is an indispensable metal in the electrical industry for making wires, electric motors, transformers and generators. Both copper and aluminum are metallic minerals.
Among the non-metallic minerals produced in India, mica is the important one. Mica is mainly used in the electrical and electronic industries. It can be split into very thin sheets which are tough and flexible."