Question # 1

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

The raw materials for the manufacturing of urea are.

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Ammonia

Carbondioxide

Limestone

a & b

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

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caustic soda

washing soda

urea

sulphuric acid

Ammonia is prepared by:

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Solvay's process

Haber's process

Floatation process

Bayer's process

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

When crude oil is heated in the fractionating tower:

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Vapour of higher boiling point fraction condense first in the lower part of the tower.

Vapours of lower boiling point fraction condense first in the lower part of tower.

Vapour of higher boiling point condense lather in the upper part of tower.

Vapours of higher boiling point never condense.

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

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30

32

34

40

Which one of the following is used as jet fuel.

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Kerosene oil

Lubricating oil

Fuel oil

Diesel oil

The process of removal of gangue form the ore is technically known as:

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concentration

purification process

metallurgy

refining

Bister copper is pure about;

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70%

80%

90%

98%

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

Blast furnace usually used for the metallurgy of.

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Iron

Copper

Aluminum

Both a and b

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