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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
The acetylene molecule contain a
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Single bond
Double bond
Triple bond
Co ordinate bond
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Question # 2
The halide which is inert to water is
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PCl5
SiCl4
BCl3
SF3
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Question # 3
In whihc period, the element with least ionization enthalpy belong to
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Group I
Group 2
Group 17
Group 18
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Question # 4
Which can be purified by sublimation
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F2
Cl2
Be2
I2
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Question # 5
In the purification of bauxite , the ore is fused with sodium carbonate in the process
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Baeyer's process
Hall's process
Serpeck's process
Any of above
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Question # 6
In average composition of a good sample of cement the percentage of silica is.
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18.5%
20.5%
22.5%
24.5%
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Question # 7
The magnitude of electron affinity depends on.
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Atomic size
Nuclear charge
Electronic configuration
All of the above
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Question # 8
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.
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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 # 9
Which among the following is insoluble in water.
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LiOH
KOH
NaOH
RbOH
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Question # 10
When borax is strongly hented, it gives
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B2O4
Na2B4O7
NaBO2
NaBO2 + B2O3
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Question # 11
Used in producing intense light in cinematography
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Xenon
Krypton
Radon
Helium
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Question # 12
Which librates H2 with NaOH
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B
AI
Zn
All
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Question # 13
Tetra halides do not undergo hydrolysis
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C
Si
Sn
Pb
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Question # 14
The hydrogen bond is strongest in.
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O - H .............S
S - H.............O
F- H....................F
F - H...............O
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Question # 15
CCl4 has zero dipole moment because of.
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Planar structure
Tetrahedral structure
Similar size of C and Cl atoms
Similar electrons affinity of C and Cl
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Question # 16
Example of intra molecular hydrogen bonding.
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O-nitrophenol
O-hydroxy benzaldehyde
O- hydroxy benzoic acid
All of the above
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Question # 17
Which of the following is the weakest base.
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KOH
NaOH
LiOH
RbOH
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Question # 18
Molten iron withdrawn from the blast furnace is called.
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Wrought iron
Pig iron
Bessemer iron
Stainless steel
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Question # 19
Fluorine is.
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Powerful oxidizing agent
Most reactive element
Used as refrigerants
All of above
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Question # 20
The geometry of Xe F2 is
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Triangular planar
Square planar
Linear
Trigonal bipyramidal
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Question # 21
Red colour of glass of due to the presence of
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Cu2O
CoO
MnO2
CdS
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