Question

Match column A with column B and select the correct option:

Column A(Ore)	Column B(Natural Ore)
a.Copper glance	i.Sulphate ore
b.Calamine	ii.Halide ore
c.Rock salt	iii.Sulphide ore
d.Epsom salt	iv.Carbonate ore

A. a(i), b(ii), c(iii), d(iv)
B. a(iv), b(ii), c(iii), d(i)
C. a(iii), b(iv), c(ii), d(i)
D. a(iv), b(i), c(ii), d(iii)

Answer 1

Most of the elements are found in the crust of the earth, in which form elements are found in the earth is called ore. Ores are of many types like oxide ore, halide ore, sulphide ore and carbonate ore.

Complete step by step answer:
Ore is a natural rock that contains one or more minerals typically containing metal that can be extracted from earth treated and sold at a profit. Most of the ores are extracted from earth through mining refined by smelting and many processes to extract the valuable minerals and metals. Ores are those minerals from which metal are extracted conveniently and profitably. These are four types of ores:
Oxide ores: the ores that contain metals in oxidised state. In these ore’s oxygen is a major component along with metal oxide ores that need much more energy to melt. Example: haematite, magnetite, chromite and cassiterite.
Sulphide ores: the ore that contains metal along with sulphur. In sulphide ore sulphur is a major component along with metal, many metals are found in the form of sulphide ore, extracting the metal from sulphide ore is easier than any other form of ore. Example: Argentite, Cinnabar, Galena
Halide ores: The Ore that contains metal and any halogen. Halide ore are very few in nature, chloride ores are the most common halide ore found in nature. Example: carnallite, cryolite, fluorite, halite.
Carbonate Ores: The ore’s that are found in carbonated form in nature. In these ores main components are metal, carbon and oxygen. Example calcite, siderite, magnesite, cerussite Let us look at the options given in the question.
Chemical formula of Copper Glance; $Cu2S\to ~$Sulphide Ore.
Chemical formula of Calamine $CaCO3\to ~$ Carbonate Ore.
Chemical formula of Rock Salt $NaCl\to ~$ Halide Ore.
Chemical formula of Epsom Salt $MgSO4.7H2O\to ~$ Sulphate Ore.

So, the correct answer is Option C.

Note: There are many steps to extract the metal from ore like mining, refining, and purification. Also, there are various processes of extraction metals such as magnetic separation, hydraulic washing, froth floatation method, etc.