Question # 1

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

In which of the following groups , oxygen is attached on both sides with carbon atoms.

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Ketone group

Ether group

Aldehyde group

Easter group

Which one of the following is a synthetic fiber:

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cotton

wool

nylon

silk

Which one of the following does not contain starch

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Sugar cane

Maize

Barley

Potatoes

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

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Fractional Distilation

Destructive Distiation

Carbonization

Catenation

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 example of heterocyclic compound is.

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Benzene

Hexane

Cyclohexane

Pyridine

In laboratory urea was prepared by

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Wohler

Rutherford

Berzelius

Dalton

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

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Fractional distillation

Sublimation

Roasting

Destructive distillation

The % age of carbon is coal is

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40-60

50-70

40-80

40-90

Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

Silicon occurs in the form of

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Silica

Silicates

both a and b

None of these

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