Question # 1

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

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Kerosene oil

Diesel oil

Alcohol

Petrol

A saturated solution of sodium chloride is called.

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Brine

Suspension

Colloidal

None of these

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

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30

32

34

40

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

Process of heating the concentrated ore to high temperature in excess of air is called.

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Roasting

Smelting

Bessemerization

All

Formula of baking soda is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₂PO₄

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

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70%

75%

78%

80%

Formula of soda ash is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₃PO₄

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

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concentration

purification process

metallurgy

refining

Compound of metal exist under earth crust are called.

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Ore

Gangue

Minral

None of these

Which contains sufficient amount of metal?

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Mineral

Ores

Rocks

Soil

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

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

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