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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
The correct order of reactivity among I , Ii, and III IS.
Choose an answer
i > ii >iii
i > iii > ii
II > III > I
III > II > I
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Question # 2
Which of the following statements is not correct about noble gases.
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Their ionization energies are very high
Their electron affinities are nearly zero
They do not form any chemical compounds
They are not easily liquefied
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Question # 3
An ionic compound X + Y - is most likely to be formed if
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Ionization enthalpy of X is high electron gain ethalpy of Y is low
Ionization enthalpy of X is high electron gain enthalpy of Y is high
Ionization enthalpy of X is low,electron gain enthalpy of Y is low
Ionization enthalpy of X is low electron gain enthalpy of Y is high
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Question # 4
After assimilation urea leaves behind in the soil
Choose an answer
NH3
CO2
Both A and B
None of above
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Question # 5
A
o
or 10 Dq is called crystal field.
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Energy
Splitting energy
Stabilization energy
None of above
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Question # 6
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 # 7
The Lewis structure of which of the following does not have coordinate bond.
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SO2
HNO3
H2SO4
HNO2
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Question # 8
Chromium is found in nature in the the form of.
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Oxides
Silicates
Borates
Sulphides
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Question # 9
According to systematic nomenclature which hydrogen compound is sulphane.
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HF
Si H4
SF4
H2S
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Question # 10
Variable electrovalency is due to the following reasons.
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Unstable configuration of core
Inset electron pair effect
All of above
None of above
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Question # 11
Oxygen and sulphur exist in state
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Free
Combined
Both free & combined
None of above
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Question # 12
Phosphorus has the oxidation state of +3 in
Choose an answer
Orthophosphoric acid
Hypophosphoric acid
Metaphosphoric acid
Orthophosphorus acid
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Question # 13
Which one of the following statements is not true.
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Transition metals form alloys
Transition metals form complexes
Zn, Cd and Hg are transition metals
K2[PtCl6] is a well known compound but corresponding nikel compound is not knonwn
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Question # 14
The one in which the acceptor atom is of low positive charge, Large size and has several outer electrons which can be easily excited is a.
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Soft base
Hard Base
Soft acid
Hard acid
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Question # 15
Which of the following species has highest bond energy.
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H2
T2
D
Cl
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Question # 16
The penultimate shells have pscudo inert gas type configuration.
Choose an answer
Ga
In
TI
All above
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Question # 17
The colour of Ni2+ ion is.
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Blue
Green
deep green
Orange
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Question # 18
Boron and aluminum halides are electron deficient compounds in this respect. they act as.
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Lewis acid
Lewis base
Oxidizing agent
Reducing agent
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Question # 19
Helium is used in weather balloons and airships instead of H2 becuse it is.
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Lighter than hydrogen
Incombustible
More abundant than hydrogen
Radiactive
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Question # 20
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 # 21
Which is the second most abundant element occurring the earth crust.
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Iron
Cu
Cr
Ni
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