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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Boric Acid is used
Choose an answer
In manufacture of pottery glaze
In medicine as an antiseptic
In tanning industry
All above
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Question # 2
Gases and dust particles are removed from H2SO4 by
Choose an answer
Tydal effect
Drying tower
Absorption tower
Contact converter
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Question # 3
Which of the following is not a property of Ni.
Choose an answer
it is a soft silvery white metal
It is malleable and ductile
It is highly magnetic
It has high electrical and thermal conductivities
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Question # 4
Which of the following iso -electronic ion would require least energy for the removal of electron.
Choose an answer
Ca2+
Cl-
Ar-
K+
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Question # 5
Which of the following metals form volatile carboyl with CO below 80
o
C
Choose an answer
Cu
Fe
CO
Ni
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Question # 6
The increase in boiling points of noble gases from He to Xe is due to the
Choose an answer
Decreases in ionization energy
Increases in polarizability
Increase in electron affinity
Increase in atomic volume
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Question # 7
Ca2+ is isolelectronic with.
Choose an answer
Mg2+
Kr
Ar
Na+
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Question # 8
The only oxidation state of alkali metals in their compounds is.
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+1
+2
-1
0
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Question # 9
Which of the following statements is wrong.
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Covenant compounds are generally soluble is polar solvents.
Covalent compounds have low melting and boiling points
Lower than that of separate H atoms
Sometimes lower and sometimes higher than that of separate H
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Question # 10
Which of the following ahs non zero dipole moment.
Choose an answer
NH3
SF6
BF3
CO2
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Question # 11
Pick out incorrect statement regarding HF
Choose an answer
It is used for making chlorofluorocarbon used as refrigerating fluids and as propellants in aerosols
It is used in making ASIF3 and synthetic cryolite
Aqueous HF is used for etchine glass
HF does not react with B2O3 even in presence of conc. H2SO4
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Question # 12
When orthoboric acid is heated strongly it gives.
Choose an answer
B2O3
H2B3O7
HBO2
B
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Question # 13
Which of the following is not an ore of iron.
Choose an answer
Haematite
Magnetite
Siderite
Monazite
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Question # 14
In the formation of H2O molecule, the oxygen atom makes use of.
Choose an answer
2p orbitals
sp hybrid orbitals
Sp2 hybrid orbitals
Sp3 hybrid orbitals
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Question # 15
H-Bonding also ox in ling system like
Choose an answer
Protein
DNA
Botha A and B
None of above
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Question # 16
Berllium has diagonal relationship with
Choose an answer
Li
Al
B
Na
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Question # 17
In which pair of species, the Lewis formulae contain same number of ion pairs and bond pairs but they are not isoelectronic.
Choose an answer
O2, N2
SO2, O3
PCl3 , BF3
SOCl2, COCl3
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Question # 18
When 0.01 moles of NaOH are added to a buffer solution, its pH changes from 4.745 to 4.832 WHAT IS ITS.
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0.115
0.900
0.015
0.215
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Question # 19
HCIO2 gives the structure of a.
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Linear
Angular
trigonal pyramidal
Tetra hddral
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Question # 20
A molecule MX4 has a square planar shape, The number of non bonding pairs of electrons around M is .
Choose an answer
2
1
0
3
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Question # 21
Which of the following carbides reacts with H2O to form propane.
Choose an answer
Al4C3
CaC2
SiC2
Sic
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