Question

Which of the following set represent correct for Malachite, Magnetite, Calamine & Cryolite?

• A. ${\mathrm{CuCO}}_3,{\mathrm{Fe}}_2{\mathrm{O}}_3,\mathrm{ZnO},{\mathrm{Al}}_2{\mathrm{O}}_3$
• B. ${\mathrm{CuCO}}_3.\mathrm{Cu}\left(\mathrm{OH}\right),{\mathrm{Fe}}_3{\mathrm{O}}_4,{\mathrm{ZnCO}}_3,{\mathrm{Na}}_3{\mathrm{AlF}}_6$
• C. ${\mathrm{CuCO}}_3,{\mathrm{Fe}}_3{\mathrm{O}}_4,{\mathrm{ZnCO}}_3,{\mathrm{Al}}_2{\mathrm{O}}_3$
• D. ${\mathrm{CuCO}}_3.\mathrm{Cu}\left(\mathrm{OH}\right),{\mathrm{Fe}}_2{\mathrm{O}}_3,{\mathrm{ZnCO}}_3,{\mathrm{Na}}_3{\mathrm{AlF}}_6$

Answer 1

The correct option is B

${\mathrm{CuCO}}_3.\mathrm{Cu}\left(\mathrm{OH}\right),{\mathrm{Fe}}_3{\mathrm{O}}_4,{\mathrm{ZnCO}}_3,{\mathrm{Na}}_3{\mathrm{AlF}}_6$

Explanation for the correct option:

Option (b):

• Malachite, Magnetite, Calami,ne and Cryolite are the ores of metals.
• The ore is the naturally occurring mineral from which the free statethe of metal is obtained.
• The formula of Malachite is ${\mathrm{CuCO}}_3.\mathrm{Cu}\left(\mathrm{OH}\right)$. It is an ore of copper.
• The formula of Magnetite is ${\mathrm{Fe}}_3{\mathrm{O}}_4$. It is an ore of iron.
• The formula of Calamine is ${\mathrm{ZnCO}}_3$. It is an ore of zinc.
• The formula of Cryolite is ${\mathrm{Na}}_3{\mathrm{AlF}}_6$. It is an ore of aluminium.

Explanation for the incorrect option:

• Option (a): The formula of none of the given ore is correct.
• Option (c): Only the formula of Magnetite and Calamine is correct.
• Option (d): The formula of Magnetite is wrong.

Final answer:

Hence, option (b) is the correct answer.