Question

What is indicator? Explain ​

Answer 1

those substance in which electricity cannotflow are are called insulator

Answer 2

$\Large{\red{\bf{Indicator}}}$

A person or thing that indicates, signals, or points out. a pointing or directing mechanism, as a pointer on the dial of an instrument to show pressure, temperature, speed, volume, etc., or a moveable icon in the graphical user interface of a computer or other device: The fuel indicator was pointing to empty.

Chemistry: A substance (as a dye) used to show visually (as by a change in color) the condition of a solution with respect to the presence of a particular material (as a free acid or alkali) litmus and phenolphthalein are acid-base indicators.

Hope It Helps You ✌️