Q 1.
Presence of small impurity usually makes a metal quite hard because the impurities :
(a) change the lattice structure of metals
(b) reduce the number of slide planes
(c) reduce the number of mobile electrons (d) reduce the crystal symmetry
Q 2.
Formation of Ni(CO)4 and its subsequent decomposition into Ni and CO (recycled)
makes the basis of Mond’s process ?
T1
T2
Ni  4CO 
 Ni CO 4 
 Ni  4CO T1 and T2 are:
(a) 100°C, 50°C
(b) 50C, 100C
(c) 50°C, 230°C
(d) 230C, 50C
Q 3.
Thomas slag is:
(a) calcium phosphate
(b) calcium silicate
(c) tricalcium phosphate and calcium silicate (d) calcium ammonium phosphate
Q 4.
Which of the following elements occurs free in nature?
(a) Iodine
(b) Sulphur
(c) Phosphorus
(d) Magnesium
The pyrolusite ore contains:
(a) Fe
(b) Al
(c) Mn
(d) Cu
Of the following reduction processes:
A: Fe2O3 + C  Fe
B: ZnO + C  Zn
C : Ca3(PO4)2 + C  P
D: PbO + C  Pb
Correct processes are:
(a) A, B, C and D
(b) A, B, D
(c) A, B, C
(d) B, D
Q 5.
Q 6.
Q 7.
Q 8.
Q 9.
Which is not the acidic flux among the following:
(a) SiO2
(b) Fe
(c) CaCO3
(d) none of these
The reagents added during froth floatation process act as:
(a) collectors
(b) activators
(c) depressants
(d) any of these
Which of the following is used as a foaming agent in froth floatation process?
(a) Pine oil
(b) Amyl xanthate
(c) CuSO4
(d) KCN
Q 10. Witherite is an ore of :
(a) Be
(b) Ca
(c) Mg
Q 11. Metals found in free as well as combined state are:
(a) sodium
(b) copper
(c) gold
Q 12. Consider the following steps:
roast in air
roast without air
CuS 
 A 
B
Which is not the correct statement ?
(a) It is self-reduction
(d) Ba
(d) all of these
(b) It involves disproportionation Cu2S  Cu + CuS
(c) A is a mixture of CuO and CuS and B is a mixture of Cu and SO2
(d) All are incorrect statements
Q 13. Which of the following processess involves the smelting process?
(a) ZnCO3  ZnO + CO2
(b) 2PbS + 3O2  2PbO + 2SO2
(c) Fe2O3 + 3C  2Fe + 3CO
(d) Al2O3.2H2O  Al2O3 + 2H2O
Q 14. Ruffle is separated from chlorapatite by:
(a) froth floatation method
(c) electromagnetic separation method
(b) levigation
(d) electrostatic separation method
Q 15. Impurities present in the ore are called:
(a) flux
(b) slag
(c) matrix
(d) any of these
Q 16. Pine oil is used for theconcentration of:
(a) oxide ores
(b) sulphide ores
(c) carbonate ores
(d) sulphate ores
Q 17. Match column A (process) with column B (electrolyte)
A
(process)
B
(electrolyte)
I
Downs cell
(W) fused MgCl2
(X)
fused
II
Dow sea water
(Al2O3 + Na3AlF6)
III
Hall – Heroult
(Y)
fused KHF2
(Z)
fused (40% NaCl
IV
Moissan
+ 60% CaCl2)
Choose the correct alternate:
I
II
III
IV
I
II
(a)
Z
W
X
Y
(b)
X
Y
(c)
W
Z
X
Y
(d)
X
Z
III
Z
W
IV
W
Y
Q 18. Metals which occur in native state in nature:
(a) are very reactive (b) are noble
(c) have low density (d) all of these
Q 19. Which of the following oxides cannot be re4uced by carbon to give the respective
metals?
(a) Cu2O, SnO2
(b) Fe ZnO3
(c) CaO, K2O
(d) PbO, Fe3O4
Q 20. The process of bringing the metal or its ore into solution by the action of a suitable
chemical reagent followed by extraction of the metal either by electrolysis- or by a
suitable precipitating agent is called:
(a) electro metallurgy
(b) electrorefining
(c) hydrometallurgy
(d) zone-refining
Q 21. Van Arkel method of purification of metals involves converting the metal to a:
(a) volatile stable compound
(b) volatile unstable compound
(c) non-volatile stable compound
(d) none of the above
Q 22. Match the reactions taking place in a blast furnace with temperature-range of operations:
Reactions
Temperature range
A:
Fe2O + CO  CO2 + FeO
(I) 1800°C
B:
CO  C + CO2
(II) 800°C
C:
FeO + CO  Fe + CO2
(III) 500-600°C
D:
CaO + SiO2  CaSiO3
(IV) 400°C
Choose the correct alternate:
A
B
C
D
A
B
C
D
(a)
IV
III
II
I
(b)
IV
II
III
I
(c)
I
II
IV
I
(d)
I
II
III
IV
Q 23. Which of the following processes makes the ore porous ?
(a) Distillation
(b) Reduction
(c) Calcination
(d) All of these
Q 24. Commercially important ore of lead is:
(a) bauxite
(b) galena
(d) dolomite
(c) haematite
Q 25. Name the metal, M which is extracted based on the following equations:
4M + 8CN- + 2H2O + O2  4 [M(CN)2]- + 4OH- 2 [M(CN)2]- + Zn  [Zn (CN)2]- + 2M
(a) Cu
(b) Au
(c) Hg
(d) Ni
Q 26. Extraction of silver from commercial lead is possible by:
(a) Mond’s process
(b) Parke’s process
(c) Clarke’s process
(d) Haber’s process
Q 27. Match the method of concentration of the ore in column I with the ore in
select the correct alternate:
Column I
Column II
(X) Magnetic separation
(A) Ag2S
(Y) Froth floatation
(B) FeCr2O4
(Z) Gravity separation
(C) Al2 (SiO3)3
X
Y
Z
X
Y
(a)
A
B
C
(b)
B
A
(c)
C
A
B
(d)
B
C
column 11 and
Z
C
A
Q 28. The extraction of metals from oxide involve:
(a) reduction with C
(b) reduction with Al
(c) electrolytic reduction
(d) reduction with CO32 
Q 29. Pentalanbite is an ore of :
(a) Cu
(b) Ni
(c) Mg
(d) Ca
Q 30. The processes by which lighter earthy particles are feed from heavier particles by using
water does not include:
(a) gravity separation
(c) hydraulic washing
(b) levigation
(d) leaching
Q 31. Which method of purification is represented following equations?
875 K
Z r  2 I 2 
 ZrI 4
2075 K
Z r I 4 
 Zr  2I 2
Tungsten filament
(a) Zone refining
(b) Van Arkel
(c) Poling
(d) Cupellation
Q 32. The process of zone refining is based upon:
(a) fractional crystallization
(b) fractional distillation
(c) magnetic properties of impurities
(d) impurities are less fusible than metals
Q 33. Match list I with, list II and select the correct answer using the codes given below the
lists:
List I
List II
A
Van arkel method
1. Manufacture of caustic soda
B
Solvay process
2. Purification of titanium
C
Cupellation
3. Manufacture of Na2CO3
D
Poling
4. Refining of silver
Codes :
A
B
C
D
A
B
C
D
(a)
2
1
3
4
(b)
4
3
2
5
(c)
2
3
5
4
(d)
5
1
3
4
Q 34. The metal extracted by leaching the ore with NaCN solution is:
(a) Cr
(b) Co
(c) Ag
Q 35. Silica is a/an :
(a) acidic flux only
acidic flux
(b) gangue only
(d) Cu
(c) basic flux only
(d) both gangue and
Answers
1.
8.
15.
22.
29.
b
d
c
a
b
2.
9.
16.
23.
30.
c
a
b
c
d
3.
10.
17.
24.
31.
c
d
a
b
b
4.
11.
18.
25.
32.
b
c
b
b
d
5.
12.
19.
26.
33.
c
b
a
b
c
6.
13.
20.
27.
34.
a
b
c
b
c
7.
14.
21
28
35.
a
c
a
d
d