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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
How many units are in Pakistan for manufacturing of Urea.
Choose an answer
3
6
9
12
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Question # 3
Imperial chemical industries was established in.
Choose an answer
1942
1944
1950
1990
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Question # 4
The number of carbon atoms present in gasoline or petrol.
Choose an answer
5-10
6-10
7-10
8-10
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Question # 5
Catalyst used in Haber's process is:
Choose an answer
Ni
Fe
Cu
Zn
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Question # 6
In smelting process a small amount of coke is required because:
Choose an answer
it is highly endothermic process
it is highly exothermic process
it is very fast process
it is very slow process
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Question # 7
Blonde hair contains compounds of:
Choose an answer
molybdenum
iron
titanium
copper
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Question # 8
How many percentage blister copper is pure?
Choose an answer
95%
75%
98%
100%
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Question # 9
Raw materials used in Solvay's process.
Choose an answer
Brine
Lime stone
Ammonia gas
All
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Question # 10
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 # 11
Extraction of metals from its ores is called.
Choose an answer
Metallurgy
Mining
Griding
All
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Question # 12
the chemical formula of chalcopyrite is:
Choose an answer
Cu
2
S
CuFe
2
S
CuS
FeS
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Question # 13
How many % age of urea is used as fertilizers?
Choose an answer
80%
90%
95%
98%
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