Question # 1

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

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Fractional distillation

sublimation

Roasting

Destructive distillation

Coal gas is mixture of

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CO and CH₄

CO . CH₄. CO₂

CO, CH₄, H₂

CO, H₂ and CO₂

General formula of Alkane is.

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C₁₀H_2n-2

C₆H₂₆

C₁₁H_2n-2

C_nH_2n-2

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

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Ketone

Ether

Aldehyde

Ester

Which one of the following is a synthetic fiber:

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cotton

wool

nylon

silk

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

The coal in which the percentage of carbon is 60%

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Peat

Lignite

Bituminous

Anthracit

Pitch is black residue of

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Coke

Coal-tar

Coal

Coal gas

Which one contains triple covalent bond?

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Pentane

Ethylene

Acetylene

All

Silicon occurs in the form of

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Silica

Silicates

both a and b

None of these

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

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Carbonization

Catenation

Hydrogenation

Cracking

Formula of acetaldehyde is:

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