Question # 1

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 black residue of the coal tar is called:

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peat

lignite

pitch

matte

Which one is heterocyclic compound?

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Benzene

Cyclobutane

Thiophene

Nephthalene

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

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Fractional distillation

sublimation

Roasting

Destructive distillation

General formula of alkyl radical is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n+1

C_nH_2n

Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

Percentage of carbon in peat is.

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50%

60%

70%

80%

Main component of natural gas is

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Methane

propane

Butane

Propene

Who put forward the vital force theory?

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Berzelius

Wohler

Dalton

Lavoisier

Coal tar contains compounds

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Benzene

Phenol

Toluene

All

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

____________ is synthetic fiber.

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Cotton

Woal

Nylon

Silk

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