Question # 1

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

How many % age of urea is used as fertilizers?

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80%

90%

95%

98%

Matte is a mixture of:

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FeS and CuS

Cu₂O and FeO

Cu₂S and FeS

CuS and FeO

How many percentage blister copper is pure?

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95%

75%

98%

100%

Raw materials used in Solvay's process.

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Brine

Lime stone

Ammonia gas

All

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

Manufacturing of urea involves:

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2 steps

3 steps

4 steps

5 steps

Imperial chemical industries was established in.

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1942

1944

1950

1990

Brown hair contains.

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Iron compound

Copper compound

titanium compound

Both a and b

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

The number of carbon atoms present in diesel oil.

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10-15

11-15

12-15

13-15

Extraction of metals from its ores is called.

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Metallurgy

Mining

Griding

All

When CO₂ is passed through the ammonical brine the only salt that precipitates is:

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NaHCO₃

NH₄HCO₃

Na₂CO₃

(NH₄)₂CO₃

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10th Class Chemistry Chapter 16 Chemical Industries English Medium KPK Boards Online Mcqs MCQs With Answers

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