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Online Tests
Chemistry Fsc Part 2 Chapter 3 Online Test MCQs With Answers
Question # 1
Ortho boric acid on strong beating gives.
Choose an answer
Borax
Boron oxide
Metaboric acid
Tetraboric acid
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Question # 2
Kaolin is a mineral of
Choose an answer
Carbon
Magnesium
Silicon
Aluminium
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Question # 3
Which element among the following belongs to Group IV A of the Periodic table.
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Barium
Iodine
Lead
Oxygen
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Question # 4
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 # 5
Ethyl alcohol on reacting with orthoboric acid form
Choose an answer
Ethyl borate
Boric acid
Boron acetate
Borax
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Question # 6
Which substance is water repellant and used in ceramic insulators.
Choose an answer
Asbestos
Lead compounds
Silicon carbide
silicones
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Question # 7
The aqueous solution of Borax
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Acidic
alkaline
Amphoteric
manual
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Question # 8
Which element form an ion with charge +3
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Beryllium
Aluminum
Carbon
Sillicon
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Question # 9
Boric acid cannot be used
Choose an answer
As antiseptic in medicine
For washing eyes
In soda bottles
For Enamals and Glazes
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Question # 10
Which element burns in nitrogen atmosphere to form nitride.
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Mg
Al
Both a and b
None of these
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Question # 11
Which of the following elements is not present abundantly in earth's crust
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Silicon
Aluminium
Sodium
Oxygen
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Question # 12
Boron usually exist in nature as
Choose an answer
Borides
Oxborates
Free element
It is a artificial element
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Question # 13
A solution of borax in water is.
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Acidic
Alkaline
Neutral
None of these
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Question # 14
Third abundant element on earth crust is.
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Boron
Oxygen
Aluminium
Silicon
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Question # 15
Corundum is
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Al2O3
Na2AlF6
Quartz
Calcium
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Question # 16
The chief of aluminum is
Choose an answer
Na
3
AlF
6
Al
2
O
3
.2H
2
O
Al
2
O
3
Al
2
O
3
.H
2
O
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Question # 17
Which is used in the leather industry
Choose an answer
Borax
Boric acid
Boric oxide
Tetra Boric acid
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