Embibe Experts Solutions for Chapter: General Principles and Processes of Isolation of Metals (Metallurgy), Exercise 1: JEE Main - 1 September 2021 Shift 2

The reaction representing the Mond process for metal refining is ______

The major component of which of the following ore is sulphide based mineral?

In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:

Given below are two statements:

Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode.
Statement II: During the Hall-Heroult electrolysis process, purified ${\mathrm{Al}}_2{\mathrm{O}}_3$ is mixed with ${\mathrm{Na}}_3{\mathrm{AlF}}_6$ to lower the melting point of the mixture.
In the light of the above statements, choose the most appropriate answer from the options given below:

The methods NOT involved in concentration of ore are

(A) Liquation
(B) Leaching
(C) Electrolysis
(D) Hydraulic washing
(E) Froth floatation

Choose the correct answer from the options given below:

Which one of the following statements is incorrect ?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason $\mathbf{R}$

Assertion A: In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature.

Reason R: CO tends to get decomposed at higher temperature.

In the light of the above statements, choose the correct answer from the options given below

Among following compounds, the number of those present in copper matte is

A. ${\mathrm{CuCO}}_3$

B. ${\mathrm{Cu}}_2\mathrm{S}$

C. ${\mathrm{Cu}}_2\mathrm{O}$

D. $\mathrm{FeO}$