Question # 1

Which of the following statement s is not true about fossil fuels?

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they all contain carbon

They are renewable

they produce pollutants when burnt

they cause acid rain

Silicon occurs in the form of

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Silica

Silicates

both a and b

None of these

Which of the following is the hardest coal?

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Pear

Lignite

Bituminous

Anthracite

Who put forward the vital force theory?

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Berzelius

Wohler

Dalton

Lavoisier

Which one of the following is a synthetic fibre?

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Cotton

Wool

nylon

silk

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

Chemical formula for urea is:

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NH4CNO

NH4CH

NH2CONH2

NH4CI

Which one of the following does ot contain protein

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Pulses

Potatoes

Beans

eggs

Formula of acetaldehyde is:

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

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Carbonization

Catenation

Hydrogenation

Cracking

The 1st organic compound prepared in laboratory.

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Urea

NaCl

Thiourea

Pyridine

Which one is heterocyclic compound?

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Benzene

Cyclobutane

Thiophene

Nephthalene

Which one is homocyclic compound?

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Benzene

Cyclobutane

Cyclohexane

All

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