Question # 1

Conversion of wood into coal is called.

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Carbonization

Destructive distillation

Fractional distillation

All

Which one of the following is a synthetic fiber:

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cotton

wool

nylon

silk

The % age of carbon is coal is

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40-60

50-70

40-80

40-90

Petroleum is refined by:

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destructive distillation

fractional distillation

simple distillation

dry distillation

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

Natural gas is 85% methane, It is used to make the follwing except.

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Carbon black

Ethane

Propane

Both b and c

The functional group- COOH is found in

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Carboxylic acid

aldehydes

alcohals

easter

Silicon occurs in the form of

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Silica

Silicates

both a and b

None of these

The formula which represents the actual number of atoms in one molecule of organic compound is called.

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Molecular formula

Structural formula

Condensed formula

Dot and cross formula

General formula of Alkane is.

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C₁₀H_2n-2

C₆H₂₆

C₁₁H_2n-2

C_nH_2n-2

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

General formula of Alkyl radical is..

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-1

C_nH_2n-2

The example of heterocyclic compound is.

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Benzene

Hexane

Cyclohexane

Pyridine

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