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Online Tests
Chemistry 10th Class English Medium Unit 16 Online Test MCQs With Answers
Question # 1
Concentration is a separating technique in which mineral is separated from.
Choose an answer
Gangue
Silicates
Aluminates
All
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Question # 2
Sodium carbonate is manufactured by.
Choose an answer
Haber's process
Ostwald's process
Solvay's process
All
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Question # 3
Froth flotation process is used to concentrate.
Choose an answer
Copper ore
Iron ore
Chromium ore
Aluminum ore
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Question # 4
Extraction of metals from its ores is called.
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Metallurgy
Mining
Griding
All
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Question # 5
The nitrogen present in urea is used by plants to synthesize.
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Sugar
Proteins
Fats
DNA
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Question # 6
Which one of the following is manufactured by Solvar's process:
Choose an answer
caustic soda
washing soda
urea
sulphuric acid
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Question # 7
Ammonia is prepared by:
Choose an answer
Solvay's process
Haber's process
Floatation process
Bayer's process
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Question # 8
Composition of carbon in the diesel oil.
Choose an answer
C
7
-C
10
C
10
-C
12
C
13
-C
15
C
15
-C
18
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Question # 9
The number of carbon atoms present in petroleum ether.
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1-5
2-5
3-7
5-7
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Question # 10
How many % age of nitrogen in urea fertilizers?
Choose an answer
40.6
45.6
46.6
50
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Question # 11
Composition of carbon in kerosene oil is.
Choose an answer
C
10
-C
12
C
12
-C
12
C
16
-C
18
C
30
-C
30
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Question # 12
In solvay's process slaked lime is used to:
Choose an answer
Prepare CO
2
Prepare quick lime
Recover ammonia
Form Na
2
CO
3
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Question # 13
Formula of baking soda is.
Choose an answer
Na
2
CO
3
NaHCO
3
Na
2
SO
4
Na
2
PO
4
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