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Online Tests
PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers
Question # 1
Which of the following statements false about transition metals.
Choose an answer
They form complexes
They show variable valency
All transiting metal compounds are paramagnetic
They form coloured ions
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Question # 2
Which of the following is not a characteristic of covalent compound.
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They have low melting and boiling points.
They ionize on dissolution in polar solvents
Their molecules have definite geometry
They are generally insoluble in water
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Question # 3
Main constituent of all inorganic matter
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Carbon
Silicon
Tin
Lead
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Question # 4
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 # 5
An element with atomic number 20 is placed in which period of the periodic table.
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1
2
3
4
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Question # 6
Which of the following have +3 oxidation states.
Choose an answer
B & AI
In & TI
B & In
AI & TI
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Question # 7
Which of the following oxides is amphoteric..
Choose an answer
CaO
BaO
BeO
MgO
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Question # 8
Urea is fertilizer
Choose an answer
Nitrogen fertilizer
Potash fertilizer
Phosphorous fertilizer
Complete fertilizer
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Question # 9
A colorless gas with pleasant odour and sweet taste.
Choose an answer
N2O
N2O3
NO
N2O4
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Question # 10
Boron does not form B3+ ion because.
Choose an answer
It has small size and high ionization energy
It has high electromagnetically
It has high charge density
None of the above
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Question # 11
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 # 12
The formula of copper pyrite is.
Choose an answer
CuFeS
CuFeS2
Cu2FEs
Cu Fe2S
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Question # 13
In diborane (B2H6)
Choose an answer
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 # 14
Among LiCl, BeCl2, BCl3, and CCl4 the covalent bond character follows the order.
Choose an answer
LiCl < Becl2< Bcl3 < CCl4
LiCl > BeCl2 < BCl3<CCl4
LiCl< Becl2 < BCl3 < CCl4
LiCl > Becl2 > BCl3 < CCl4
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Question # 15
The process of extracting a metal in pure form its ores is known as.
Choose an answer
Crushing
Grinding
Dressing
Metallurgy
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Question # 16
What is the oxidation number of the central meal atom in the coordination compound.[Pt(NH#)#Cl]Cl
Choose an answer
-1
0
+2
+3
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Question # 17
Which of the following is the most stable towards heat.
Choose an answer
CaCO3
BaCO3
Na2CO3
MgCO3
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Question # 18
Catenation is a process of.
Choose an answer
Formaton of cations
Deposition of cations
Formation of long chain of identical atoms
Formation of covalent bond
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Question # 19
Metallic magnesium is obtained by
Choose an answer
Reduction of MgO with Coke
Electrolysis of an aqueous solution of MgCl2
Electrolysis of molten MgCl2
Displacement of magnesium by iron form MgCl2 solution.
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Question # 20
The fluoride tooth paste contains
Choose an answer
SnF2 and Sn2P2O7
NaF
CaF2
None of these
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Question # 21
The penultimate shell of carbon contains electrons.
Choose an answer
s2
s2p6
s2p6d10
s2p6d8
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