Question

Match the column I with II and mark the appropriate choice.

Column I Column II

(A)| Borax| (i)| $N{a_3}Al{F_6}$
(B)| Inorganic Substances| (ii)| $N{a_2}{B_4}{O_7}.10{H_2}O$
(C)| Cryolite| (iii)| $A{l_2}{O_3}.2{H_2}O$
(D)| Bauxite| (iv)| ${B_2}{N_3}{H_6}$

A. (A)$\to$ (ii), (B)$\to$(i), (C)$\to$(i), (D)$\to$(iii)

B. (A)$\to$ (i), (B)$\to$(ii), (C)$\to$(iii), (D)$\to$(iv)

C. (A)$\to$ (ii), (B)$\to$(iii), (C)$\to$(i), (D)$\to$(iv)

D. (A)$\to$ (iii), (B)$\to$(i), (C)$\to$(ii), (D)$\to$(iv)

Answer 1

Ores are minerals, which are used to extract metals with low cost and easily. Different metals are having different ores.We recall the chemical formula given of borax, cryolite, Bauxite and inorganic benzene.

Complete step by step answer:
1. Borax: Also known as sodium tetraborate decahydrate have chemical formula $N{a_2}{B_4}{O_7}.10{H_2}O$ .
2. Inorganic benzene: Borazine is known as inorganic benzene. Its chemical formula is ${B_3}{N_3}{H_6}$ .
3. Cryolite: Earlier it was used as an ore of aluminium and later in the electrolytic processing of the aluminium – rich oxide ore Bauxite. Its chemical formula is $N{a_3}Al{F_6}$.
4. Bauxite: Bauxite is a sedimentary rock with a relatively high aluminium content. Its chemical formula is $A{l_2}{O_3}.2{H_2}O$ .
Correct answer is option A. $(A) \to (ii),{\text{ (B)}} \to {\text{(iv), (C)}} \to {\text{(i), (D)}} \to {\text{(iii)}}$ .

Additional Information: Ores are natural rocks or sediments having valuable minerals. Ores of aluminium are bauxite, corundum, cryolite, felspar, alunite, kaolin etc. Ores of iron are hematite, limonite, magnetite, siderite etc. Ores of zinc are calamine, zinc blende or sphalerite, willemite etc. Ores of copper are chalcopyrite, bornite, enargite etc. Ores of silver are argentite, chlorargyrite or horn silver etc. Ores of magnesium are magnesite, dolomite, brucite, serpentinite etc. Ores of lead are galena and anglesite. Borax is formed by orthoboric acid. Inorganic benzene has a structure similar to benzene. Inorganic benzene is also known as borazine or borazole. Inorganic benzene is isoelectronic and isostructural with benzene.

Note:
Bauxite is used for the production of aluminium and Cryolite used as a solvent for Bauxite in the electrolytic production of aluminium.