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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
Which of the following statements false about transition metals.
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They form complexes
They show variable valency
All transiting metal compounds are paramagnetic
They form coloured ions
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Question # 3
Which of the following is planar?
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CH2Cl2
CHCl3
CCl4
C2H2
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Question # 4
An element with high electronegativity has
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High IE and high EA
High IE and low EA
Low IE and High EA
Low IE and low EA
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Question # 5
The Ostwald process is the main method for the manufacture of nitric Acid in the fist step in this process is.
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Nitrogen and hydrogen react to form NH3
Ammonia is burned in O2 to generate N2 and H2O
Nitrogen and oxygen react to form NO2
Ammonia is burned with O2 to generate NO and H2O
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Question # 6
Which of the following elements has the highest value of IE.
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Na
K
Mg
Ca
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Question # 7
Law of octaves was proposed by
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Lother meyer
D.I.Mendeleev
J.A.R. Newlands
J.W. Dobereiner
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Question # 8
How many varieties of commercial iron are known.
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1
2
4
3
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Question # 9
Which of the following pairs shows diagonal relationship
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Li and Mg
Na and K
Zn and Cd
Li and BE
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Question # 10
Considering the elements B, Al, Mg and K , the correct order of their metallic character is.
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B > Al > Mg > K
Al > Mg > B > K
Mg > Al > K > B
K > Mg > Al > B
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Question # 11
Berllium has diagonal relationship with
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Li
Al
B
Na
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Question # 12
Which of the following statement is incorrect.
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An alloy is a mixture of two or more metals
An alloy is a mixture of two or more metal and non metal elements that have metallic properties
An alloy has a fixed composition
An amalgam is an alloy containing Hg
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Question # 13
Bryllium salts on hydrolysis give.
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Basic solutions
Acidic solutions
Neutral solutions
Amphoteric solutions.
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Question # 14
The only oxidation state of alkali metals in their compounds is.
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+1
+2
-1
0
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Question # 15
Which of the following statements correct regarding copper.
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It is used in electroplating
Its salts are used as insecticides
Its salts are used as coloring materials
All are correct
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Question # 16
Which of the following compounds has highest boiling point.
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HI
HF
HBr
HCl
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Question # 17
Shows a regular increase on moving down the group form carbon to lead
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Atomic volume
Atomic radius
Density
All above
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Question # 18
Which can be purified by sublimation
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F2
Cl2
Be2
I2
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Question # 19
Which of the following elements has the highest value of second ionization energy.
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Lithum
Beryllium
Boron
Magnesium
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Question # 20
Which of the following is not an alum.
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KAI (SO4)3 12 H2O
NaAI (SO4)2 12 H2O
NH4Fe (SO4)2 12H2O
FeAl (SO4)2 . 12 H2O
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Question # 21
The value of Kw increase with temperature because the ionization of water.
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Positive
Negative
Endothermic
Exothermic
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