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Online Tests
Chemistry Fsc Part 2 Chapter 3 Online Test MCQs With Answers
Question # 1
Which of the following elements is not present abundantly in earth's crust.
Choose an answer
Silicon
Aluminium
Sodium
Oxygen
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Question # 2
Al reacts with caustic soda to form
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Sodium aluminates
Aluminium hydroxide
Aluminium oxide
sodium tetra aluminate
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Question # 3
The aqueous solution of Borax
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Acidic
alkaline
Amphoteric
manual
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Question # 4
Which one of the followings is not ore of aluminium
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Coruridum
Bauxite
Colemanite
Kaolin
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Question # 5
Aluminum reacts with nitrogen to form
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AIN
Al
2
N
Al
2
N
3
Al
4
N
6
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Question # 6
Aluminium is used for making petrol and milk storage tanks because it is
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Conductor
Non magnetic
Excellent reflected
Corrosion resistant
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Question # 7
Aluminium does not corrode because.
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It is a semi metal
It is a silver shining metal
It does not react with O2
It forms a protective layer of Al2O3
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Question # 8
Ethyl alcohol on reacting with orthoboric acid form
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Ethyl borate
Boric acid
Boron acetate
Borax
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Question # 9
Boric acid can not be used.
Choose an answer
As antiseptic in medicine
For washing eyes
In soda bottle
For enamels and glazes
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Question # 10
Which are correct oxidation states for lead
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+1, +2
+3 , +5
+2 ,+4
+4 only
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Question # 11
silicones are
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Some salts of sodium
Allotropes of SI
Inorganic polymers
Coloured compounds of Si
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Question # 12
Corundum is
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Al2O3
Na2AlF6
Quartz
Calcium
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Question # 13
The composition of white lead is
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PbCO3.Ph(OH)2
PbCO3.2Pb(OH)2
2PbCO3.Pb(OH)2
PbCO3
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Question # 14
Boron usually exist in nature as
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Borides
Oxborates
Free element
It is a artificial element
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Question # 15
Which element burns in nitrogen atmosphere to form nitride.
Choose an answer
Mg
Al
Both a and b
None of these
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