Question # 1

The % age of carbon in coke is

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60

70

90

98

The strong heating of coal in the absence of air called.

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Fractional Distilation

Destructive Distiation

Carbonization

Catenation

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

Conversion of wood into coal is called.

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Carbonization

Destructive distillation

Fractional distillation

All

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

The strong heating of coal in retoris in the absence of air is called.

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Fractional distillation

Sublimation

Roasting

Destructive distillation

Which one is homocyclic compound?

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Benzene

Cyclobutane

Cyclohexane

All

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

Which one of the followoing is the Hardest coal.

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Peat

Lignite

Bituminous

Anthracite

The strone heating of coal in retorts in the absence of air is called.

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Fractional distillation

sublimation

Roasting

Destructive distillation

The branch of chemistry which deals with the study of hydrocarbons and their derivatives is known as.

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Organic chemistry

Inorganic chemistry

Biochemistry

Nuclear chemistry

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

In laboratory urea was prepared by

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Wohler

Rutherford

Berzelius

Dalton

Which of the following statement s is not true about fossil fuels?

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they all contain carbon

They are renewable

they produce pollutants when burnt

they cause acid rain

Alkyl radical is derivative of

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Alkane

Alkene

Alkyne

All

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