Question # 1

The functional group- COOH is found in

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Carboxylic acid

aldehydes

alcohals

easter

The coal in which the percentage of carbon is 60%

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Peat

Lignite

Bituminous

Anthracit

Functional group of Alcohols is

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-COOH

-C=0

C-O-C

-OH

Coal gas is mixture of

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CO and CH₄

CO . CH₄. CO₂

CO, CH₄, H₂

CO, H₂ and CO₂

Main component of natural gas is

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Methane

propane

Butane

Propene

Percentage of methane present in natural gas is.

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75%

80%

85%

90%

Conversion of dead plants into coal by the action of bacteria and heat is called.

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Carbonization

Catenation

Hydrogenation

Cracking

The black residue of the coal tar is called:

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peat

lignite

pitch

matte

The ability of carbon atom to form chain is called.

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Isomerism

Catenation

resonance

Condensation

Chemical formula for urea is:

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NH4CNO

NH4CH

NH2CONH2

NH4CI

Petroleum is refined by

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Destructive distillation

Fractional distillation

Simple distillations

Dry distillation

The example of heterocyclic compound is.

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Benzene

Hexane

Cyclohexane

Pyridine

The % age of carbon in peat is :

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60%

70%

80%

90%

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