Question # 1

Sodium carbonate is manufactured by.

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Haber's process

Ostwald's process

Solvay's process

All

Concentration is a separating technique in which mineral is separated from.

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Gangue

Silicates

Aluminates

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The elements that do not conduct heat and electricity are called.

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Metallurgy

Non metal

Metalloid

Alloy

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

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concentration

purification process

metallurgy

refining

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

Composition of carbon in the diesel oil.

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C₇-C₁₀

C₁₀-C₁₂

C₁₃-C₁₅

C₁₅-C₁₈

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

The number of carbon atoms present in fuel oil.

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14-18

15-18

16-18

17-18

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

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Roasting

Smelting

Bessemerization

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In forth flotation process the ore particles are preferentially wetted by:

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water

oil

benzene

petrole

Froth flotation process is used to concentrate.

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Copper ore

Iron ore

Chromium ore

Aluminum ore

Blonde hair contains compound of.

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Iron

Copper

titanium

Molybdenum

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