Question # 1

Which one of the following compounds is an aldehyde?

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CH₃-CH₂-OH

CH₃-COOH

CH₃CHO

CH₃COCH₃

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

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Carbonization

Destructive distillation

Fractional distillation

All

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

The % age of carbon in peat is :

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60%

70%

80%

90%

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

The % age of carbon is bituminous is

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60

70

80

90

Which one of the following does not contain starch

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Sugar cane

Maize

Barley

Potatoes

Petroleum is refined by:

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destructive distillation

fractional distillation

simple distillation

dry distillation

Pitch is black residue of

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Coke

Coal-tar

Coal

Coal gas

Main component of Natrual gas.

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CH₃

CH₄

C₂H₆

C₂H₂

Carbonization process is the conversion of

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Coal into coal gas

Coal into wood

Wood into coal

Wood into coal tar

The functional group -COOH is found in.

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Aldehydes

Esters

Carboxylic acids

alcohols

Aromatic compounds are given this name because of;

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smell they have

slippery touch they have

bitter taste they have

sour taste they have

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

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Fractional distillation

sublimation

Roasting

Destructive distillation

Main component of natural gas is

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Methane

propane

Butane

Propene

Petroleum is refined by

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Destructive distillation

Fractional distillation

Simple distillations

Dry distillation

Which one is homocyclic compound?

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Benzene

Cyclobutane

Cyclohexane

All

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