Question # 1

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

Compound of metal exist under earth crust are called.

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Ore

Gangue

Minral

None of these

Which one of the following organic compound is found is gasoline?

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C₂H₄

C₃H₈

C₇H₁₀

C₁₂H₂₆

When CO₂ is passed through the ammonical brine the only salt that precipitates is:

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NaHCO₃

NH₄HCO₃

Na₂CO₃

(NH₄)₂CO₃

Manufacturing of urea involves:

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2 steps

3 steps

4 steps

5 steps

Ammonia is prepared by:

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Solvay's process

Haber's process

Floatation process

Bayer's process

Crude oil is heated to the fractionating furnace upto.

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300 ^oC

350^oC

400^oC

450^oC

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

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

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Kerosene oil

Diesel oil

Alcohol

Petrol

Froth flotation process is used to concentrate the ore on:

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Density basis

Concentration basis

Wetting basis

Magnetic basis

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

Extraction of metals from its ores is called.

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Metallurgy

Mining

Griding

All

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