General Principles & Processes of Isolating Elemen

Consider two chemical reactions (A) and (B) that take place during metallurgical process:

(A) $ZnC{O}_{3\left(s\right)}\stackrel{\Delta }{\to }Zn{O}_{\left(s\right)}+C{O}_{2\left(g\right)}$                             

(B)  $2Zn{S}_{\left(s\right)}+3O_{2\left(g\right)}\stackrel{\Delta }{\to }2Zn{O}_{\left(s\right)}+2S{O}_{2\left(g\right)}$

The correct option of names given to them respectively is:

If the conductivity of mercury at 0°C is 1.07 * 10⁶ S m^-1 and the resistance of a cell containing mercury is 0.243 $\Omega ,$  then the cell constant of the cell is x * 10⁴ m^-1. The value of x is______.

(Nearest integer)

In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud is _________.

Pb, Sb, Se, Te, Ru, Ag, Au and Pt

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Aluminuim is extracted from bauxite by the electrolysis of molten mixture of Al₂O₃ with cryolite.

Reason (R): The oxidation state of Al in cryolite is +3.

In the light of the above statements, choose the most appropriate answer from the options given below:

Consider the suphides HgS, PbS, CuS, Sb₂S₃, As₂S₃, and CdS. Number of these sulphides soluble in 50% HNO₃ is________.

Which refining process is generally used in the purification of low melting metals?

Given below are two statements.

           Statement I: During electrolytic refining, blister copper deposits precious metals.

           Statement II: In the process of obtaining pure copper by electrolysis method, copper blister is used to make the anode.

           In the light of the above statements, choose the correct answer form the option given below:

Given below are two statements.

Statement I:  The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of $\Delta G$  vs temperature.

Given below are two statements:

Statement I: Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper.

Statement II: It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a froth flotation method.

Choose the most appropriate answer from the options given below:

In liquation process used for tin (Sn), the metal