Question

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

Match the column

Column I	Column II
A [Ore]	B [Nature of 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

The correct option is C

(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

C

• The mineral which contains either metal or metal compounds in enough quantity that can be extracted easily and profitability is termed as ore.
• Copper glance is an ore of Copper(Cu) that exists in the form of Copper(I) sulfide (Cu₂S). Due to the presence of sulfide ion $\left({\mathrm{S}}^{2-}\right)$, copper glance ore is classified as sulfide ore.
• Calamine is an ore of Zinc (Zn) that exists in the form of Zinc carbonate (ZnCO₃). Due to the presence of $\left({\mathrm{CO}}_3^{2-}\right)$ ion, Calamine ore is classified as carbonate ore.
• Rock salt or Sodium chloride has the chemical formula NaCl. Due to the presence of chloride ion $\left({\mathrm{Cl}}^{-}\right)$, Rock salt is classified as halide ore.
• Epsom salt is an ore of Magnesium (Mg) that exists in the form of hydrous Magnesium sulfate $\left({\mathrm{MgSO}}_4·7{\mathrm{H}}_2\mathrm{O}\right)$. Due to the presence of sulfate ion $\left({\mathrm{SO}}_4^{2-}\right)$, Epsom salt is classified as sulfate ore.

Hence, option C is correct.