Easy
The example of non-metallic mineral is -
Explanation
Explanation
Minerals are classified as metallic (which yield metals like Manganese, Gold, and Lead) or non-metallic (which don't contain metal elements). Mica is a non-metallic mineral, widely used in electrical insulation due to its unique sheet-like structure. So the correct answer is Mica, option (3).
PRO TIP
Re-check your working by substituting the answer back into the original question.