Which of the following is a non-metallic mineral?

Limestone is correct answer. Key Points

• Limestone (calcium carbonate CaCO 3) is a carbonate sedimentary rock that is the primary source of lime.
• It is largely made up of the minerals calcite and aragonite, both of which are crystal forms of CaCO 3.
• Limestone is formed when these minerals precipitate out of dissolved calcium-containing water.
• Limestone is largely composed of calcium carbonate, but it may also contain trace amounts of clay, silt, and organic substances. Impurities can change the color and texture of the material.
• Limestone occurs in marine habitats where calcium carbonate-rich organic waste, such as shells and coral, accumulates. These components compress and solidify with time, generating limestone deposits.
• There are several types of limestone, each with its own distinct properties. Some common types are chalk, marl, travertine, and tufa, which differ in texture, origin, and application.

Additional Information

• Lead is an element that occurs naturally in trace levels in the earth's crust. While it has some helpful applications, it can also be poisonous to humans and animals, causing health problems.
• Copper (Cu) is a chemical element that is a reddish, very ductile metal in Periodic Group 11 (Ib) that is an exceedingly good conductor of electricity and heat. Copper is found in nature in its free metallic state.
• Tin (Sn) is a chemical element in Group 14 (IVa) of the periodic table that belongs to the carbon family. It is a delicate, silvery white metal with a bluish tinge that was known to the ancients as bronze, a copper alloy. Tin is commonly utilized in the plating of steel cans used as food containers, as well as in metals used in bearings.