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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Which of the following is the strongest oxidant.
Choose an answer
F2
Cl2
br2
I2
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Question # 2
Which of the following statement is not true regarding Open Hearth process.
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No iron is lost
The process is economical and simple
Steel obtained is of high quality
Scrap iron cannot be used in this process.
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Question # 3
in monel metal copper is alloyed wiht which metal.
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Fe
Mn
Ni
All
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Question # 4
A boy accidently splashes a few drops of conc. H2SO4 on his cotton shirt. A few minutes later, the splashed part blacken and holes appear.This is because the sulphuric acid.
Choose an answer
Heats up the cotton so that it burns
Dehydrates the cotton
Causes cotton to react with oxygen of the air
Removes the elements of water from cotton
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Question # 5
Which name is associated with the rules which help in predicting the portability of anion.
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Soddy
Slater
Fajan
Linus pauling
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Question # 6
When two atoms of hydrogen combine to form a molecule of hydrogen gas the energy of the molecule.
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higher than that of the separate atoms
Equal to that of the separate atoms
Lower than that of the separate atoms
Sometimes lower and sometime higher.
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Question # 7
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 # 8
The most stable oxidation state shown by lead is.
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+2 , +4
+2 only
+3 , +4
+4 only
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Question # 9
CIF is
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Chlorine monoflouride
Fluourine
Monochlorine fluoride
Monofluorine chloride
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Question # 10
Which of the following elements would have the lowest first ionization energy
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Mg
Rb
Li
Ca
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Question # 11
The common oxidation state of lanthanides is.
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+3
+2
+1
+4
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Question # 12
Which metal can produce dihydrogen gas by reaction with dil H2SO4
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Ag
Fe
Cu
Pt
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Question # 13
Aluminum occurs in nature as.
Choose an answer
Native
Combined form
Both native and combined
Free
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Question # 14
Stable metal ions strictures are.
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Noble gas structure
Is electron group structure
Transition metal in structure
All of the above
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Question # 15
Formula of orthophosphoric acid
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H2PO4
H3PO2
H3PO2
H2P2O5
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Question # 16
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 # 17
The increase in boiling points of noble gases from He to Xe is due to the
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Decreases in ionization energy
Increases in polarizability
Increase in electron affinity
Increase in atomic volume
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Question # 18
Bromine is used as
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Fungicides
Herbicides
Germicides
Insecticides
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Question # 19
The Hall process involves the reduction of Al2O3 to aluminium by
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Carbon
Carbon monoxide
Molecular hydrogen
Electrolysis
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Question # 20
Which trihalide is not hydrolysed by water
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NF3
NCl3
PCl3
AsCl3
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Question # 21
In nature nickel is found in the form of.
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Sulphides
Silicates
Arsenides
All
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