Purification And Characterisation Of Organic Compounds Question 194

Question: When a metal is to be extracted from its ore and the gangue associated with the ore is silica, then

Options:

A) an acidic flux is needed

B) a basic flux is needed

C) both acidic and basic fluxes are needed

D) Neither of them is needed

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Since silica is acidic impurity the flux must be basic.

$ CaO+SiO_2\to CaSiO_3 $