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Online Tests
PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Give violet colour to flame
Choose an answer
Gallium
indium
Thallium
Aluminium
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Question # 2
The rusting of iron is catalysed by which of the following.
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Fe
O2
Zn
H+
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Question # 3
Which of the following has the maximum tendency to form complexes.
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K
Na
Rb
Li
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Question # 4
In diborane (B2H6)
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The structure is similar to that of C2H6
All the atoms are in one plane
The born atoms are linked through hydrogen bridges
There is a direct boron boron bond
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Question # 5
Duralumin is an alloy of.
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Mg + AI
Ai+ Mg+Mn
Mg + Ai + Cu
Mg + Ai + Cu + Mn
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Question # 6
A stable molecule is a group of atoms held together by
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Chemical forces
Physical forces
Valence force
None of above
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Question # 7
CIF is
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Chlorine monoflouride
Fluourine
Monochlorine fluoride
Monofluorine chloride
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Question # 8
Among alkali metals, the least metallic element is.
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Li
Na
Rb
Cs
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Question # 9
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 # 10
Main constituent of all inorganic matter
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Carbon
Silicon
Tin
Lead
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Question # 11
Which of the following bonds will be non polar.
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N - H
O - H
C - H
C l - Cl
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Question # 12
Colour in transition metal compounds in attributed to
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Small sized metal ions
Absorption of light in UV region
Complete ns sub shell
incomplete (n-1) sub shell
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Question # 13
Which among the following is least soluble in water.
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NaF
LiF
KF
CsF
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Question # 14
In smelting process the ore is mixed with
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Silica
Coke
Limestone
All
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Question # 15
When calcium is heated in the flame of a Bunsen burner, the colour imparted to the flame is.
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Golden yellow
Brick red
Crimson red
Grassy green
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Question # 16
Zinc oxide is.
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A basic oxide
An amphoteric oxide
An acidic oxide
A neutral oxide
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Question # 17
Which of the following is not an ore of iron.
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Haematite
Magnetite
Siderite
Monazite
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Question # 18
XeF4 is obtained, when a mixture of Xenon and fluorine in the ratio is heated in a nickle vessel at 400
o
C
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1 : 3
5 :1
1 :20
1 :5
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Question # 19
In which of the following characteristics does hydrogen resemble halogens.
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Hydrogen is the lightest gas
H atoms contains one electron each
Hydrogen forms ionic hydrides with alkali metals
Hydrogen has three isotopes.
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Question # 20
Molecules have zero dipole moment
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CO2
BCl3
CH4 & CCl4
All above
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Question # 21
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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