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

Column X	Column Y
(1)    AI	(p) Calamine
(2)    Cu	(q) Cryolite
(3)    Mg	(r) Malachite
(4)    Zn	(s) Carnalite

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

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

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)

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

Oxidation states of the metal in the minerals haematite and magnetite, respectively, are

(1) II, III in haematite and III in magnetite

(2) II, III in haematite and II in magnetite

(3) II in haematite and II, III in magnetite 

(4) III in haematite and II, III in magnetite 

Native silver metal forms a water-soluble complex with a dilute aqueous solution of NaCN in the presence of:

1. Nitrogen

2. Oxygen

3. Carbon Dioxide

4. Argon

What method is used to extract zinc from zinc blende?

1. Electrolytic reduction

2. Roasting followed by reduction with carbon

3. Roasting followed by reduction with another metal

4. Roasting followed by self-reduction