Question

Fill in the blanks with the correct choice.
The undesired impurities present in the ores are called ___(i)___. To remove the volatile impurities from the ore, the ___(ii)___ process is carried out. Flux combines with non-fusible impurities to form ___(iii)___. $CaO$ acts as a ___(iv)___ flux.

• A. (i) - gangue, (ii) -roasting, (iii) - slag, (iv) -acidic
• B. (i) - gangue, (ii) - calcination, (iii) - slag, (iv) - basic
• C. (i) - anode mud, (ii) - leaching, (iii) - matrix, (iv) -acidic
• D. (i) - gangue, (ii) -roasting, (iii) - solution, (iv) -acidic

Answer 1

Answer: (B)

(i) - gangue, (ii) - calcination, (iii) - slag, (iv) - basic

$\left(i\right)$ The undesired impurities present in the ores are called gangue.

$\left(ii\right)$ To remove the volatile impurities from the ore calcination is carried out.

$\left(iii\right)$ Flux combines with non-fusible impurities to form slag.

$\left(iv\right)$ $CaO$ acts as basic flux.