Question # 1

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

The % age of carbon is bituminous is

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60

70

80

90

The carbon contents in lignite is.

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80%

50%

60%

70%

Petroleum is refined by:

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destructive distillation

fractional distillation

simple distillation

dry distillation

Coal tar contains compounds

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Benzene

Phenol

Toluene

All

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

Main component of Natrual gas.

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CH₃

CH₄

C₂H₆

C₂H₂

Percentage of methane present in natural gas is.

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75%

80%

85%

90%

Who was prepared acetic acid in laboratory?

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Berzelius

Wohler

Kolbe

Dalton

Organic compounds contain:

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ionic bond

Covalent bond

Metallic bond

Co-ordinate covalent

The example of heterocyclic compound is.

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Benzene

Hexane

Cyclohexane

Pyridine

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

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Fractional Distilation

Destructive Distiation

Carbonization

Catenation

The functional group- COOH is found in

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Carboxylic acid

aldehydes

alcohals

easter

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