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10th Class Chemistry Chapter 16 Chemical Industries English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Metallurgy involves which of the following steps?
Choose an answer
Mining and enrichment
Reduction
Refining and casting.
All of these
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Question # 2
The number of carbon atoms present in kerosene oil.
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8-12
9-12
10-12
11-12
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Question # 3
Formula of baking soda is.
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Na
2
CO
3
NaHCO
3
Na
2
SO
4
Na
2
PO
4
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Question # 4
Sindh alkalies limited was established near Karachi in.
Choose an answer
1965
1966
1970
2000
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Question # 5
The raw materials for the manufacturing of urea are.
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Ammonia
Carbondioxide
Limestone
a & b
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Question # 6
Chalco-pyite is an ore of:
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iron
aluminium
silver
copper
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Question # 7
Formula of soda ash is.
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Na
2
CO
3
NaHCO
3
Na
2
SO
4
Na
3
PO
4
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Question # 8
Ammonical brine is prepared by dissolving ammonia gas in.
Choose an answer
NaCl
CaCO
3
CaCl
2
Na
2
SO
4
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Question # 9
How many % age of nitrogen in urea fertilizers?
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40.6
45.6
46.6
50
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Question # 10
Concentration is a .
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Mixing technique
Separating technique
Boiling technique
cooling technique
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Question # 11
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 # 12
At the time of partition, How many industries wee present in Pakistan.
Choose an answer
30
32
34
40
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Question # 13
Extraction of metals from its ores is called.
Choose an answer
Metallurgy
Mining
Griding
All
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