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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Beryllium shows diagonal relationship with.
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Mg
Al
Na
B
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Question # 2
Group VA of the periodic table consist of elements.
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3
4
5
6
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Question # 3
AlCl3 fumes in air because of.
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Hydrolysis
Dehydration
Hydration
Oxidation
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Question # 4
AI Cl3 acts as a strong Lewis acid, because it is.
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A covalent compound
Readily hydrolyzed
Electron deficient
An ionic compound
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Question # 5
Considering the elements B, Al, Mg and K , the correct order of their metallic character is.
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B > Al > Mg > K
Al > Mg > B > K
Mg > Al > K > B
K > Mg > Al > B
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Question # 6
Which metal burns in air at high temperature with the evolution of much heat.
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Cu
Hg
Pb
Al
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Question # 7
Molecule of oxygen is
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Diamagnetic
Paramagnetic
Both A and B
None of above
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Question # 8
Magnalium is alloy of Aluminium which is used in
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Scientific apparatus
Aircraft parts
Rail road care
Boat machinery
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Question # 9
The formula of bleaching powder is.
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Ca OCl2
CaCIO3
Ca(CIO)3)2
CaOCI
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Question # 10
The coordination number of closely packed hexagonal is.
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4
6
8
12
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Question # 11
Which of the following compounds is must acdic.
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H2O
H2S
H2Se
H2Te
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Question # 12
The commonly used catalyst in the manufacture of H2SO4
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Fe2O3 with a little CuO
v2O5
Platinized asbestos and MgSO4
All above
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Question # 13
The atomic number of Potassium is 19 and that of manganese is 25. Although the coloured of MnO4 is dark violet yet the K+ is colourles.. This is due to the fact that
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Mn is a transition element while K+ is not
[MnO4]is negatively charged while K+ has a positive charge
The effective atomicnumebr of Mn is [MnO4] is 26 while for K+ the atomic number is 18
The Mn in a high positive oxidation state allows charge transfer transitions
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Question # 14
Which one has a co ordinate bond.
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Al2Cl6
BF3
NaCl
O2
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Question # 15
Hydrogen gas will not redue
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Heated cupric oxide
Headed ferric oxide
Heated stannic oxide
Heated aluminium oxide
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Question # 16
Electron gas theory is able to explain
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Metallic lusture and optical properties
Malleability and ductility
High electrical and thermal conductivity
All of the above
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Question # 17
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 # 18
Among oxides of nitrogen all are gases except.
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N2O5
N2O
NO
N2O3
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Question # 19
Ionic compounds in general possess both
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High melting point and non -directional bonds
High melting points and low boiling poinits
Directional bonds and low boiling points
High solubility in polar and non -polar bonds.
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Question # 20
Metallic bond is treated essentially as in character
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Ionic
Covalent
Polar
Non polar
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Question # 21
Which of the following compound does not following octet rule.
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CS2
PBr3
IBr
Br F3
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