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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Hydrogen at the moment of its generation is generally called.
Choose an answer
Protium
Nascent hydrogen
Atomic hydorgen
Heavy hydrogen
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Question # 2
Buffer solution are used to.
Choose an answer
Increase the pH
Resist the pH
Decrease the pH
None of above
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Question # 3
Elements of group 14 have the electronic configuration of their outer shell as
Choose an answer
ns2 np3
ns2 np2
ns2 np6
ns2
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Question # 4
Fluorine does not show variable oxidation state because of.
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its high electronegativity
Its small sixe
low dissociation energy of F-F bond
Non availability of d-orbitals
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Question # 5
SO3 exists in form
Choose an answer
a -so3
b-SO3
gama SO3
All above
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Question # 6
What is the following is incorrect.
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Water is more polar than H2S
H2O2 is a planar molecule
Heavy water is produced by the exhauative electrolysis of water made acidic
H2O2 act both as oxidising as well as reducing agent in acidic medium
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Question # 7
Which of the following is most soluble in water
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CaSO4
Sr SO4
MgSO4
BaSO4
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Question # 8
Alums are generally used
Choose an answer
In Dying and water proofing of fabric
In arrest bleeding
IN water purification
All above
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Question # 9
The formula of Borax is.
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Na2B4O7 6H2O
Na2B4O7 8H2O
Na2B4O7 10H2O
Na2B4O7 12H2O
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Question # 10
In group theory the triple degenerate set is denoted by
Choose an answer
eg
t2g
e2g
tg
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Question # 11
The common oxidation state of elements of group V A is.
Choose an answer
-3
+3
+5
Any above
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Question # 12
Which of the following is not true as compared with alkaline earth metals.
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Alkali metals are more reactive
Alkali metals have lower density
Alkali metals are more electro positiveness
Alkali metals have stronger metallic bonds
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Question # 13
Which element amongst the following has the highest boiling point.
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Na
Mg
Ca
K
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Question # 14
Which of the following is the active ingredient in ordinary household bleach.
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HCl
Cl2
NaCl
NaCIO
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Question # 15
Among oxides of nitrogen all are gases except.
Choose an answer
N2O5
N2O
NO
N2O3
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Question # 16
All the member of group III A are metals except.
Choose an answer
B
Ai
Ga
In
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Question # 17
The acetylene molecule contain a
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Single bond
Double bond
Triple bond
Co ordinate bond
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Question # 18
Pick out the incorrect statement regarding ozone.
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O3 is an unstbale dark blue diamagnetic gas
The central oxygen in O3 is sp3 hybridized
It cause the tailing of mercury
It does not react with KOH
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Question # 19
According to Fajns rules, which one of following results in increased ionic nature of the covalent bond.
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Larger cation and smaller charges on anion
Larger cation and larger charge on anion
Smaller cation and smaller charge on anion
Smaller cation and larger charge on anion
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Question # 20
The aluminium salt commonly used to stop bleeding is
Choose an answer
Aluminium sulphate
Potash Alum
Aluminium chloride
Aluminium fluroide
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Question # 21
Both the elements shows allotropy
Choose an answer
B & Ai
B & Si
Al & Si
Any of above
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