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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
SO3 exists in form
Choose an answer
a -so3
b-SO3
gama SO3
All above
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Question # 2
Which of the following elements does not impart any characteristic colour to the flame.
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Ca
Mg
Ba
Sr
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Question # 3
Shows a regular increase on moving down the group form carbon to lead
Choose an answer
Atomic volume
Atomic radius
Density
All above
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Question # 4
The correct order of thermal stabilities of hydriedes of group 15 is.
Choose an answer
NH3 > PH3 > AsH3 > BiH3> SbH3
NH3 > PH3 >AsH3 > SbH3> BiH3
NH3 < PH3 < SbH3 > AsH3 > BiH3
BiH3 > Sb H3 > AsH3 > PH3 > NH3
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Question # 5
Hypo is used in photography to.
Choose an answer
Reduce AgBr to metallic silver
Remove silver a silver salt
Remove undecomposed silver bromide as soluble complex
Remove reduced silver
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Question # 6
Which of the following method is used for the coventrating of ores.
Choose an answer
Gravity separation
Magnetic concentration
Fourth floatation
Electrostatic concentration
All
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Question # 7
A thionic acid
Choose an answer
H2S2O3
H2S2O6
H2S2O8
H2S2O7
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Question # 8
Since the acid gives both acidic and normal salts so the acid is.
Choose an answer
di acid
di basic
double salt
Any of above
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Question # 9
Red colour of glass of due to the presence of
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Cu2O
CoO
MnO2
CdS
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Question # 10
The noble gases are found in the atmosphere to the extent of about some percent by volume.
Choose an answer
0.5%
1.0%
1.5%
2.0%
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Question # 11
Xe reacts directly with
Choose an answer
O2
Cl2
F2
Br2
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Question # 12
BCl3 is a planar molecule because B atom is.
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sp2 hybridized
Sp3 hybridized
sp hybridzed
sp3 d hybridized
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Question # 13
Used in producing intense light in cinematography
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Xenon
Krypton
Radon
Helium
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Question # 14
Pick out the incorrect statement for Xe F6
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XeF6 is hydrolyzed practically to form XeOF4
It reacts with SiO2 to form Xe F4
On complete hydrolysis, it forms XeO3
It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.
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Question # 15
Which of the following pairs shows diagonal relationship
Choose an answer
Li and Mg
Na and K
Zn and Cd
Li and BE
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Question # 16
H2SO4 is used
Choose an answer
In the preparation of aqua regia
In the purification of gold and silver
In the dental filling
None of above
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Question # 17
Which of the following ions does not have the electronic configuration same as that of neon.
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F-
O2-
Na+
Ca2+
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Question # 18
Which of the following is the active ingredient in ordinary household bleach.
Choose an answer
HCl
Cl2
NaCl
NaCIO
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Question # 19
Lead pencil contain
Choose an answer
Lead
Lead sulphide
a mixture of lead and silica
graphite
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Question # 20
Setting of cement is improved by
Choose an answer
Lime stone
Clay
Gypsum
Water
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Question # 21
Which of the following alkaline earth metals occurs in radioactive form in nature.
Choose an answer
Ca
Mg
Ra
Ba
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