Question # 1

Crude oil is heated to the fractionating furnace upto.

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300 ^oC

350^oC

400^oC

450^oC

Which one of the not metal.

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Copper

Carbon

chromium

Iron

The number of carbon atoms present in kerosene oil.

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8-12

9-12

10-12

11-12

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

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C₂H₄

C₃H₈

C₇H₁₀

C₁₂H₂₆

When NaHCO₃is heated if forms:

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CO₂

Ca(OH)₂

CaCO₃

CaO

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

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Kerosene oil

Diesel oil

Alcohol

Petrol

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

On which bases froth floatation process take place?

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Density bases

Concentration basis

Watting basis

None of these

Blonde hair contains compounds of:

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molybdenum

iron

titanium

copper

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

When NaHCO₃ is heated it forms.

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CO₂

Ca(OH)₂

CaCO₃

CaO

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

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

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NaHCO₃

NH₄HCO₃

Na₂CO₃

(NH₄)₂CO₃

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