Reduction for which ore should be partially r | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The process of auto-reduction is used for the extraction of metals like $Cu$,$Hg$,and $Pb$ from their sulfide ores. In this process,the sulfide or

Vedclass · Accepted Answer

Auto reduction

Vedclass · Answer

(B) The process of auto-reduction is used for the extraction of metals like $Cu$,$Hg$,and $Pb$ from their sulfide ores. In this process,the sulfide ore is partially roasted in air to convert a part of the sulfide into its oxide or sulfate. This oxide or sulfate then reacts with the remaining unroasted sulfide ore to produce the metal without the need for an external reducing agent. For example,in the case of $Cu_2S$,the reaction is: $2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$ followed by $2Cu_2O + Cu_2S \rightarrow 6Cu + SO_2$.

Reduction for which ore should be partially roasted is

Similar Questions

Which of the following reactions is an example of roasting?

Consider two chemical reactions $(A)$ and $(B)$ that take place during metallurgical processes:
$(A)$ $ZnCO_{3(s)} \longrightarrow ZnO_{(s)} + CO_{2(g)}$
$(B)$ $2ZnS_{(s)} + 3O_{2(g)} \longrightarrow 2ZnO_{(s)} + 2SO_{2(g)}$
The correct names for these processes are:

Roasting involves

Which one of the following statements is false?

Select the process in which $SO_2$ is $NOT$ evolved:

Vedclass Test Series

Exam Paper Generator

Online Exam Module