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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Inert pair effect is best shown by
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Si
Z
Sn
Pb
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Question # 2
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 # 3
Example of peseudohalonge group.
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Cyanogen
Thiocyanogen
Selenocyanogen
All above
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Question # 4
Which of the following elements is most electropositive.
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C
N
O
Be
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Question # 5
Which of the following statements false about transition metals.
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They form complexes
They show variable valency
All transiting metal compounds are paramagnetic
They form coloured ions
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Question # 6
The decreasing order of the second ionization energies of K, Ca and Ba is
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K > Ca > Ba
Ca > Ba > K
Ba > K > Ca
K > Ba > Ca
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Question # 7
The principal ores of copper are
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Copper sulphides
Copper oxides
Both sulphides and oxides
Copper carbonate
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Question # 8
Potassium reacts with excess of oxygen to form
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K2O
K2O2
KO2
K2O3
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Question # 9
Select the correct IUPAC nae for [Co(NH3)6 ]2+
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Hexammoniacobaltate (II) ion
Hexaamminecobaltate (II) ion
Hexammoniacobalt (II) ion
Hexaamminecobalt (II) ion
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Question # 10
Bases and reducing agents are electron giving agents and also called as.
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Electrodotic
Electrophile
Nucleophile
None of above
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Question # 11
A general trend in the properties of elements of carbon family shows that with increase in atomic number.
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The tendency towards concatenation increases
The tendency to show +2 oxidation state increase
Metallic character decreases
The tendency to form complexes with convalency higher than four decreases.
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Question # 12
Ammonia is utilized for
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Manufacture of urea
Oxidation to nitric acid
Manufacture of ammonium sulphate
All above
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Question # 13
Borax exist in the form
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Ordinary borax
Octahdral borax
Borax glass
All above
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Question # 14
Which of the following is the third most abundant element in the nature.
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Oxygen
Sulphur
Aluminum
Hydrogen
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Question # 15
The most abundant metal in earth's crust is.
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Fe
Al
Ti
Ca
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Question # 16
Formula of orthophosphoric acid
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H2PO4
H3PO2
H3PO2
H2P2O5
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Question # 17
Which of the following process is not involved in the purification of bauxite.
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Bayer's process
Serpek's process
Hall's process
Goldsmith's process
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Question # 18
Metal are
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Hard
Ductile
Malleable
All
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Question # 19
Which of the following elements forms maximum number of compounds.
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Carbon
Silicon
Hydrogen
Fluorine
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Question # 20
Blue color of glass of due to the presence of .
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Cobalt (II)
Chromium (III)
Iron (III)
copper (II)
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Question # 21
The concentration of OH- ions in a certain household ammonia solution is 0.0025. This ammonia solution is.
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Basic
Acidic
Neutral
None of above
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