An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation?

Question

An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation? (A) H2SO4 (B) CaCO3 (C) SiO2 (D) Both B and C

Tardigrade Admin · Accepted Answer

CaCO3 on heating gives CaO, which is basic in nature. It can react with acidic impurities to form slag.

Q. An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation?

$H_{2} S O_{4}$

$C a C O_{3}$

$S i O_{2}$

Both B and C

$C a C O_{3}$ on heating gives CaO, which is basic in nature. It can react with acidic impurities to form slag.

Q. An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation?

H2​SO4​

CaCO3​

SiO2​

Both B and C

CaCO3​ on heating gives CaO, which is basic in nature. It can react with acidic impurities to form slag.

$H_{2} S O_{4}$

$C a C O_{3}$

$S i O_{2}$

$C a C O_{3}$ on heating gives CaO, which is basic in nature. It can react with acidic impurities to form slag.