Question # 1

Chemical formula of matte will:

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Cu2S.FeS

Cu2S

Cu2O

FeS

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

How many % age of urea is used as fertilizers?

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80%

90%

95%

98%

Froth flotation process is used to concentrate.

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Copper ore

Iron ore

Chromium ore

Aluminum ore

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

How many % age of nitrogen present in air by volume?

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70%

75%

78%

80%

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

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30

32

34

40

Ammonia is prepared by:

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Solvay's process

Haber's process

Floatation process

Bayer's process

The number of carbon atoms present in petroleum gas.

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1-2

1-3

1-4

1-5

Formula of Urea is.

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KCNO

H₂N-CO-NH₂

HN-CO₂-NH

H₃N-CO-NH₃

Raw materials used in Solvay's process.

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Brine

Lime stone

Ammonia gas

All

Petroleum fraction having composition C₇to C₁₀IS called

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Petroleum gas

Petroleum Ether

Kerosine oil

Gasoline or petrol

Formula of baking soda is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₂PO₄

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