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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 is the weakest base.
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KOH
NaOH
LiOH
RbOH
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Question # 3
If steel is heated to a temperature well below red heated and is then cooled slowly the process is called.
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Annealing
Quenching
Tempering
Nitriding
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Question # 4
Which of the elements of group II A has the highest value of IE.
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Mg
Be
Ca
Sr
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Question # 5
Which of the following elements has the highest value of second ionization energy.
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Lithum
Beryllium
Boron
Magnesium
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Question # 6
The interactions in HF are.
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dipole dipole interasctions
Hydrogen bonds
dipole -dipole and dispersion forces
Hydrogen bond and diapersin forces
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Question # 7
Of all the noble gaes, easily available gases are
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He & Ar
He & Ne
Ne & Ar
Xe & Kr
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Question # 8
The formula of Borax is.
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Na2B4O7 6H2O
Na2B4O7 8H2O
Na2B4O7 10H2O
Na2B4O7 12H2O
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Question # 9
Which is the purest form of iron.
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Pig iron
Cast iron
Wrought iron
Steel
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Question # 10
Metals are
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Transparent
Tranalucant
Opaque
None of above
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Question # 11
Which element out of the following can ehibit a maximum con valency of seven.
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Chlorine
Sulphur
Fluorine
both Cl and F
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Question # 12
Example of intra molecular hydrogen bonding.
Choose an answer
O-nitrophenol
O-hydroxy benzaldehyde
O- hydroxy benzoic acid
All of the above
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Question # 13
In German Silver copper is alloyed with which metal.
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Zn
Ni
Ai
Zn and Ni
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Question # 14
The element having highest ionization energy and least electron affinity belong to
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Period 1 , group 18
Period 2, group 17
Period 2, group 1
Period 2, group 2
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Question # 15
H2SO4 acts as gent
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Reducing
Oxidizing
Both A and B
None of above
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Question # 16
The common ligands can be arranged in order of their increasing splitting power to cause d-orbitals splitting. This series is called as.
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Electro-chemical
Spectro -chemical
Physico-chemical
Spectro -electrical
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Question # 17
Increasing oxygen contents in oxyacids leads to.
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An increase in thermal stability
An increase in acid strength
A decrease in oxidizing power
All above
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Question # 18
The noble gas used or treatment of cancer is
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Helium
Argon
Radon
Krypton
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Question # 19
The energy gap between two bands so large that it effectively prevents the promotion of electron from the lower to the higher band such energy gap all called.
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Ionization zone
Dissociation zone
Distinction zone
Forbidden zone
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Question # 20
The ion that is isoelectornic with CO is
Choose an answer
CN-
O2+
CO2-
N2+
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Question # 21
Finely divided iorn combines with CO to give
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Fe(CO)3
Fe2 (CO)9
F33(CO)12
Fe(CO)6
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