Match the elements in Column I with methods of purification in Column II.

     Column I       Column II

(a) Boron             (i) Van Arkel method

(b) Tin                 (ii) Mond's process

(c) Zirconium       (iii) Liquation

(d) Nickel            (iv) Zone refining

(1) (a)-(iv) (b)-(iii) (c)-(i) (d)-(ii)

(2) (a)-(iv) (b)-(iii) (c)-(ii) (d)-(i)

(3) (a)-(ii) (b)-(i) (c)-(iv) (d)-(iii)

(4) (a)-(iii) (b)-(iv) (c)-(i) (d)-(ii)

During the process of electrolytic refining of copper, metals that are present as impurities and settle as anode mud are :

1. Ag, and Au

2. Pb, and Zn 

3. Fe, and Ni 

4. Sn, and Ag

At a temperature above 1073 K, coke can be used to reduce FeO to Fe. It can be best explained by:

1. Ellingham diagram.

2. Orgel diagram.

3. Tunabo-Sugano diagram.

4. Born-Haber cycle.

Two sulphide ores are separated by : 

1. Hydrometallurgy method

2. Pyrometallurgy method

3. Froth floatation method

4. Gravimetric method

The iron ore that is used to line the reverberatory furnace to prepare the purest form of iron is-

1. Haematite 

2. FeO

3. \(Fe_{3}O_{4}\)

4. None of the above.

Match the following choosing one item from column X and the appropriate item from column Y

1. 1-q, 2-s,3-r, 4p

2. 1-q, 2-r,3-s, 4p

3. 1-p, 2-r,3-s, 4q

4.1-r, 2-q,3-s, 4p

Match the extraction processes listed in column I with metals listed in column II.

A.  (1-p,r) (2-p) (3-q) (4-s)

B.  (2-p,r) (1-p) (3-q) (4-r)

C.  (1-q,r) (2-p) (4-q) (3-s)

D.  (1-p) (2-p,r) (3-q) (4-q)

A metal's oxide that can be reduced by Fe as a reducing agent at a temperature $T_1$ is:

1. Zr

2. Ca

3. Mg

4. None of the above.

Iron is extracted from chalcopyrite as :

1. FeO
2. FeS
3. Fe₂O₃
4. FeSiO₃

Extraction of metal from the ore cassiterite involves

(1) Carbon reduction of an oxide ore

(2) Self-reduction of a sulphide ore

(3) Removal of copper impurity

(4) Removal of iron impurity