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PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
The state of hybridization of carbon in CO2 is
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sp2
sp
sp3
dsp2
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Question # 2
Helium oxygen mixture is used by deep sea divers in preference to nitrogen oxygen mixture, because.
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Helium is much less soluble in blood than nitrogen
Nitrogen is much less soluble in blood than helium
Due to high pressure deep under the sea, nitrogen and oxygen react to give poisonous nitric oxide.
Nitrogen is highly soluble in wateer
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Question # 3
The halide which is inert to water is
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PCl5
SiCl4
BCl3
SF3
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Question # 4
Which of the following is the third most abundant element in the nature.
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Oxygen
Sulphur
Aluminum
Hydrogen
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Question # 5
Select the correct IUPAC name for [FeF4(OH)2]-
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Diaquatrafluoriron (III) ion
Diaquateratrafluoriferrate (III) ion
Diaquatertrafluoroiron (I)
None of these
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Question # 6
In their ionic compounds halogens exhinit the oxidation states of.
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-1
-2
-3
-4
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Question # 7
Un-like s -block elements d-block elements form which compounds as well
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ionic compounds
Co valent compound
Co ordinate compounds
None of above
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Question # 8
Solid substances consist of an ordered any of ions and solid as a whole is electrically.
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Conductor
Neurtal
Acidic
Basic
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Question # 9
The important condition for the formation of chemical bond is that.
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Their electron clouds should not diffuse
Both atoms should have high electron affinites.
Both atoms should have same electronegativities
The process should be accompanied by the lowering in potential energy.
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Question # 10
Which of the following statements is correct.
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A sigma bond is weaker than a pi pond
There are four coordinate bonds in the Lewis structure of NH4+ ion.
The 1 covalent bond is directional in nature
A single bond between the two atoms cannot be re bond.
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Question # 11
A molecule the cannot be susperimposed on its mirror image is said to exhibit which of the following.
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Geometrical isomerism
Optical isomerism
Linkage isomerism
Reactive isomerism
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Question # 12
The concept of telluric helisx was developed by
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Lother meyer
A.E. de Chancourtois
New lands
Doberieiner
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Question # 13
The atomic and ionic radii value on moving from left to right in the sereis.
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Increase
Decrease
Does not change
None of above
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Question # 14
Which of the following statement is true.
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Ferromagnetic separation is used to remove rion impurities from bauxite.
Aluminium is an amphoteric element which means that it can act as an oxidizing agent and as a reducing agent
Aluminium has a strong attinity for oxygen
Aluminothermic reactions are endothermic
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Question # 15
In the Aluminothermite process, aluminium acts as.
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An oxidizing agent
A reducing agent
A flux
A Solder
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Question # 16
Which of the following will exhibit variable electro Valency due to intert pair effect.
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Fe
Sn
K
Both Fe and Sn
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Question # 17
Beryllium shows diagonal relationship with.
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Mg
Al
Na
B
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Question # 18
Arrange the following in order of increasing boiling point.
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CH3OH < CH3Cl < RbCl < CH4
CHOH < CH4 < CH3Cl < RbCl
RbCl < CH3Cl < CH3OH < CH4
CH4 < CH3Cl < CH3OH < RbCl
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Question # 19
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 # 20
HCIO evolves Cl2 and O2 when dissolve
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Ca
Ni
Cu
Any of above
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Question # 21
The first ionization energy in electron volts of nitrogen and oxygen atoms are respectively given by.
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14.6, 13.6
13.6, 14.6
13.6, 13.6
14.6, 14.6
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