Question # 1

Formula of soda ash is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₃PO₄

On which bases froth floatation process take place?

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Density bases

Concentration basis

Watting basis

None of these

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

The number of carbon atoms present in petroleum gas.

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1-2

1-3

1-4

1-5

Compound of metal exist under earth crust are called.

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Ore

Gangue

Minral

None of these

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

Formula of Urea is.

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KCNO

H₂N-CO-NH₂

HN-CO₂-NH

H₃N-CO-NH₃

Formula of baking soda is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₂PO₄

How many units are in Pakistan for manufacturing of Urea.

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3

6

9

12

the chemical formula of chalcopyrite is:

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Cu₂S

CuFe₂S

CuS

FeS

Which one of the following is not a fraction of petroleum?

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Kerosene oil

Diesel oil

Alcohol

Petrol

The residual oil is heated above 400 c to produce.

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Lubricants

Paraffin wax

Asphalt

All

At the time of partition, How many industries wee present in Pakistan.

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30

32

34

40

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