Question # 1

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

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Gangue

Silicates

Aluminates

All

Sodium carbonate is manufactured by.

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Haber's process

Ostwald's process

Solvay's process

All

Froth flotation process is used to concentrate.

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Copper ore

Iron ore

Chromium ore

Aluminum ore

Extraction of metals from its ores is called.

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Metallurgy

Mining

Griding

All

The nitrogen present in urea is used by plants to synthesize.

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Sugar

Proteins

Fats

DNA

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

Composition of carbon in the diesel oil.

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C₇-C₁₀

C₁₀-C₁₂

C₁₃-C₁₅

C₁₅-C₁₈

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

In solvay's process slaked lime is used to:

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Prepare CO₂

Prepare quick lime

Recover ammonia

Form Na₂CO₃

Formula of baking soda is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₂PO₄

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