Question # 1

General formula of Alkynes is.

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C₆H_2n-2

C_nH_2n+2

C₁₁H_2n-2

C_nH_2n-2

Molecular formula of butane is

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C₄H₈

C₄H₁₀

C₄H₁₂

C₄H₆

The % age of carbon in coke is

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60

70

90

98

The % age of carbon is lignite is

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60

70

80

90

Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

In laboratory urea was prepared by

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Wohler

Rutherford

Berzelius

Dalton

The strong heating of coal in retoris in the absence of air is called.

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Fractional distillation

Sublimation

Roasting

Destructive distillation

Main component of natural gas is

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Methane

propane

Butane

Propene

The strong heating of coal in the absence of air called.

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Fractional Distilation

Destructive Distiation

Carbonization

Catenation

Which one of the following does not contain starch

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Sugar cane

Maize

Barley

Potatoes

Hydrogen atoms preset in pentane are.

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10

12

14

16

Natural gas contains.

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Methane

Ethane

Propane

All

The coal in which the percentage of carbon is 60%

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Peat

Lignite

Bituminous

Anthracit

Which one of the following is not a fossil fuel?

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Coal

Natural gas

Bio gas

Petroleum

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

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

Petroleum is refined by:

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destructive distillation

fractional distillation

simple distillation

dry distillation

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