Which nonmetallic mineral is used as a building material and also in the manufacture of steel? a graphite b sulfur c limestone d corundum

The right option is; C limestone

Limestone is the nonmetallic mineral that is used as a building material and also in the manufacture of steel.

Limestone is an abundant naturally occurring rock of marine and fresh water sediments that is primarily composed of high levels of the mineral calcite (CaCO3) with small quantity of other minerals such as quartz (silica), pyrite (iron sulphide) etc. Limestone is used for a wide range of industrial and manufacturing uses. It is used as a building material and it is also an important raw material used in manufacturing iron and steel.

liquid crystals are matters in a state which have properties between those of conventional liquids and those of solid crystals[1]. liquid crystal is partially ordered and anisotropic. in terms of molecular order, liquid crystal molecules have one-dimensional or two-dimensional long - range order.