INDIAN GEOGRAPHY

Detailed explanation-1: -Limestone is a sedimentary rock (an organic sedimentary rock ). It is composed of calcium carbonate and magnesium or mixture of these two constitutes. From the given options, limestone is a non-metallic mineral.

Detailed explanation-2: -Non-metallic minerals include sand, gravel, limestone and fertiliser minerals (among others).

Detailed explanation-3: -Nonmetallic minerals are, for example, sand, gravel, limestone, clay, and marble. Such materials lack metallic characteristics like good electric and thermic conductivity, luster, rigor, and malleability; they are, however, essential for many industries.

Detailed explanation-4: -Limestone is a non-metallic mineral.

Detailed explanation-5: -Non-metallic minerals are minerals that do not contain any metals. Some examples of non-metallic minerals are limestone, mica, gypsum, coal, dolomite, phosphate, salt, and granite. Mineral fuels like coal and petroleum are also non-metallic minerals.