Given below are two statements:

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

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
1. Distillation
2. Zone refining
3. Electrolysis
4. Chromatography

The maximum temperature that can be achieved in blast furnace is :

1. Upto 1900 K

2. Upto 5000 K

3. Upto 1200 K

4. Upto 2200 K

The correct statement among the following is:

Which one is a malachite from the following?

1. CuCO₃.Cu(OH)₂

2. CuFeS₂

3. Cu(OH)₂

4. Fe₃O₄

Identify the incorrect statement:

Considering Ellingham diagram, which of the following metals can be used to reduce alumina?

1. Fe

2. Zn

3. Mg

4. Cu

Extraction of gold and silver involves leaching with CN^- ion. Silver is later recovered by

(1) liquation

(2) distillation

(3) zone refining

(4) displacement with Zn

Match items of Column I with the items of Column II and assign the correct code.
        Column l                                                                    Column II
A. Cyanide process                                                            1. Ultrapure Ge
B. Froth floatation process                                                 2. Dressing of ZnS
C. Electrolytic reduction                                                      3. Extraction of Al
D. Zone refining                                                                  4. Extraction of Au
                                                                                            5. Purification of Ni
Codes
      A  B  C  D
(a)  2  3  1  5
(b)  1  2  3  4
(c)  3  4  5  1
(d)  4  2  3  1