Which of the following are non-metallic minerals?
(A) Mica
(B) Bauxite
(C) Granite
(D) Potash
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (C) and (D) only
Minerals are grouped by what they yield. Metallic minerals contain a metal that can be extracted from them (iron ore, bauxite, copper); non-metallic minerals do not, and are used as they are (mica, salt, potash, sulphur, granite, limestone, marble).
(A) Mica Correct. Mica is a non-metallic mineral that splits into thin, clear sheets; it is a good insulator and is used in electrical and electronic goods.
(B) Bauxite Incorrect. Bauxite is the ore of aluminium, a metallic mineral.
(C) Granite Correct. Granite, a hard rock used in building, is grouped with the non-metallic minerals, like limestone and marble.
(D) Potash Correct. Potash, a potassium salt used mainly as a fertiliser, is a non-metallic mineral; no metal is extracted from it for use.