Question # 1

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

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C₂H₄

C₃H₈

C₇H₁₀

C₁₂H₂₆

Composition of carbon in the diesel oil.

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C₇-C₁₀

C₁₀-C₁₂

C₁₃-C₁₅

C₁₅-C₁₈

Formula of soda ash is.

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Na₂CO₃

NaHCO₃

Na₂SO₄

Na₃PO₄

The process of roasting during metallurgy of copper is carried out in a special furnace called.

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Blast furnace

Fire furnace

Bessemer converter

Reverberatory furnace

Catalyst used in Haber's process is:

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Ni

Fe

Cu

Zn

The impurities associated with the minerals are known as:

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Metallurgy

Ores

Gangue

Compounds

Matte is a mixture of:

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FeS and CuS

Cu₂O and FeO

Cu₂S and FeS

CuS and FeO

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

The number of carbon atoms present in petroleum gas.

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1-2

1-3

1-4

1-5

When copper pyrite (CuFeS2) is strongly heated in excess of airit converted into mixture of:

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Cu2S + Cu2O

Cu2O +FeS

Cu2S + FeS

FeO + SO2 + Cu2S

Sodium carbonate is manufactured by.

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Haber's process

Ostwald's process

Solvay's process

All

In smelting process a small amount of coke is required because:

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it is highly endothermic process

it is highly exothermic process

it is very fast process

it is very slow process

Crude oil is heated to the fractionating furnace upto.

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300 ^oC

350^oC

400^oC

450^oC

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