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Online Tests
Chemistry 10th Class English Medium Unit 16 Online Test MCQs With Answers
Question # 1
How many % age of nitrogen present in air by volume?
Choose an answer
70%
75%
78%
80%
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Question # 2
Chalco-Pyrite is an ore of:
Choose an answer
Copper
Silver
Iron
Aluminium
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Question # 3
At the time of partition, How many industries wee present in Pakistan.
Choose an answer
30
32
34
40
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Question # 4
How many units are in Pakistan for manufacturing of Urea.
Choose an answer
3
6
9
12
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Question # 5
Chemical formula of copper glance is:
Choose an answer
Cu2O
Cu2S
CuFeS2
CuSO4
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Question # 6
Which one of the ore of copper?
Choose an answer
Copper glance
Chalcopyrite
Both a and b
None of these
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Question # 7
On which bases froth floatation process take place?
Choose an answer
Density bases
Concentration basis
Watting basis
None of these
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Question # 8
Which one is not the fraction of residual oil?
Choose an answer
Paraffin wax
Asphalt
Fuel oil
Coke
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Question # 9
When CO
2
is passed through the ammonical brine the only salt that precipitates is:
Choose an answer
NaHCO
3
NH
4
HCO
3
Na
2
CO
3
(NH
4
)
2
CO
3
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Question # 10
Sindh alkalies limited was established near Karachi in.
Choose an answer
1965
1966
1970
2000
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Question # 11
The number of carbon atoms present in petroleum ether.
Choose an answer
1-5
2-5
3-7
5-7
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Question # 12
The impurities associated with the minerals are known as:
Choose an answer
Metallurgy
Ores
Gangue
Compounds
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Question # 13
Raw materials used in Solvay's process.
Choose an answer
Brine
Lime stone
Ammonia gas
All
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