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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Reacts violently with water
Choose an answer
AlH3
AlCl3
Lia IH4
Al2Cl6
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Question # 2
With which one of the following configurations, the lowest value of first IE is associated.
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Is2, 2s2, 2p6, 3s1
1s2, 2s2, 2p5
1s2, 2s2, 2p6
1s2, 2s2, 2p6, 3s2, 3p2
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Question # 3
Oxides ores of Aluminium
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Corundum
Bauxite
Diaspore
All above
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Question # 4
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 # 5
Lead pencil contain
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Lead
Lead sulphide
a mixture of lead and silica
graphite
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Question # 6
Perdisulphuric acid is.
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Marshal acid
Caro acid
None of above
Any of above
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Question # 7
The correct order of thermal stabilities of hydriedes of group 15 is.
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NH3 > PH3 > AsH3 > BiH3> SbH3
NH3 > PH3 >AsH3 > SbH3> BiH3
NH3 < PH3 < SbH3 > AsH3 > BiH3
BiH3 > Sb H3 > AsH3 > PH3 > NH3
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Question # 8
Transition elements, in general, exhibit the following properties, except one, Name that property.
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Variable oxidation state
Natural radioactivity
Tendency to form complexes
Formation of alloys
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Question # 9
Which of the halogens has lowest bond energy.
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Cl2
Br2
F2
I2
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Question # 10
The number used in cancer therapy is.
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Fe
Co
Ni
Rn
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Question # 11
Which one of the following pairs are chemically dissimilar.
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Na and K
Ba and Sr
Zr and HF
Ca and Zn
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Question # 12
The most stable oxidation state of chromium is.
Choose an answer
+6
+3
+4
+2
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Question # 13
The first noble gas compound was
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XeO3
XeF4
XeF6
Xe +[PtF6]
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Question # 14
Pick out incorrect statement about K2Cr2O7
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It oxidizes acidified solution H2SO4 to S
It oxidizes KI to I2
It oxidizes HCl to Cl2
It gives oxygen, when treated with cold conc. H2SO4
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Question # 15
Metallic bond is treated essentially as in character
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Ionic
Covalent
Polar
Non polar
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Question # 16
The correct increasing order of bond dissociation energy for N2, O2, F2 and Cl2 is
Choose an answer
N2 < O2 < F2 < Cl2
F2 < Cl2 < O2 < N2
F2 < Cl2 < N2 < O2
N2 < Cl2 < F2 < O2
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Question # 17
Which of the following is soluble in water.
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AgF
AgCl
AgBr
Ag I
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Question # 18
Which of the following has highest ionization energy.
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Oxygen
Argon
Barium
Caealum
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Question # 19
Pick out the incorrect statement
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The geometry around 'N' atom in trimethylamine is pyramidal
The geometry around N atom in trisilylamine is planar
The nitrogen atim is trimethylamine is sp2 hybridized whilst in trisilylamine it is sp2 hybridized
Trisilylamine has donor properties whilst trimethylamine has no donor properties.
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Question # 20
Of the following an amphoteric hydroxide is.
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Ca(OH)2
NaOH
Be (OH)2
Li OH
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Question # 21
Diamond and carbon are the _________ forms of carbon
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Isotropic
amorphous
Allotropic
Isomeric
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