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Online Tests
PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Which of the following statement is true.
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Ferromagnetic separation is used to remove rion impurities from bauxite.
Aluminium is an amphoteric element which means that it can act as an oxidizing agent and as a reducing agent
Aluminium has a strong attinity for oxygen
Aluminothermic reactions are endothermic
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Question # 2
In manufacturing of cement crystallization of amorphous dehydration products of clay
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500
o
C to 800
o
C
900
o
C to 1200
o
C
1250
o
C ti 1400
o
C
1000 to 1100
o
C
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Question # 3
When steam is passed over red bot coke The product formed is
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Hydrogen and carbon dioxide
Mixture of hydrogen and carbon monoxide
Mixture of hydrogen and oxygen
Heavy hydrogen
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Question # 4
A colorless gas with pleasant odour and sweet taste.
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N2O
N2O3
NO
N2O4
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Question # 5
Tetra halides do not undergo hydrolysis
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C
Si
Sn
Pb
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Question # 6
Black and white photographic film contain small grains of.
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Silver bromide
Silver cholride
Silver iodide
Any of above
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Question # 7
The metallic character of group 14 elements
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Decreases from top to bottom
Increases from top to bottom
Does not change gradully
Has no significance
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Question # 8
Which of the group 13 element does not form M (III) idodie.
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Al
Ga
Ti
In
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Question # 9
Which of the following steps in involved in the metallurgy of aluminium.
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Purification of bauxite
Electrolytic reduction of alumina
Refining of aluminum
All above
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Question # 10
In the metallurgy of iron, when limestone is added to the blast furnaced, the calcium ion ends up in
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Slag
Gangue
Metallic calcium
Calcium carbonate
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Question # 11
The noble gas used or treatment of cancer is
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Helium
Argon
Radon
Krypton
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Question # 12
Lead pencil contain
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Lead
Lead sulphide
a mixture of lead and silica
graphite
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Question # 13
AlCl3 fumes in air because of.
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Hydrolysis
Dehydration
Hydration
Oxidation
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Question # 14
By applying an external force the ionic solid can be easily broken to powder form so the ionic solid are highly
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Hard
Brittle
Tough
Soft
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Question # 15
Which of the following metals form volatile carboyl with CO below 80
o
C
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Cu
Fe
CO
Ni
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Question # 16
Aluminium hydroxide is.
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An acid
An amphoteric hydroxide
A base
An explosive hydroexide
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Question # 17
When borax is strongly hented, it gives
Choose an answer
B2O4
Na2B4O7
NaBO2
NaBO2 + B2O3
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Question # 18
The electronic configuration of chromium is 4s1, 3d5, The elements tungsten (W) belongs to the same group and has atomic number 74.The configuration of its valence shell is.
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5s1, 4d5
6s1, 5d5
6s1, 5d6
6s1, 5d4
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Question # 19
Boron does not form B3+ ion because.
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It has small size and high ionization energy
It has high electromagnetically
It has high charge density
None of the above
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Question # 20
The chief ore of aluminium is.
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Cryolite
Bauxite
Kaolin
Carnalite
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Question # 21
Which of the ionic possesses highest bond energy.
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C-C
Si -Si
Ge - Ge
Sn -Sn
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