Question # 1

Chemical formula of chloroform.

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CH₃Cl

CH₂O₂

CHCl₂

CCl₄

Coal is the mixture of

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Hydrogen

Methane

Carbon monoxide

All

Alkyl radical is derivative of

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Alkane

Alkene

Alkyne

All

Which one of the following is used as jet fuel.

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Kerosene oil

Lubricating oil

Fuel oil

Diesel oil

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

The carbon contents in lignite is.

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80%

50%

60%

70%

Normaily rain water is weakly acidic because.

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SO₃

CO₂

CO₃

NO₂

Lipids are macromolecules. They have characteristics except one of the following.

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They are high energy foods.

They are soluble in water.

They are poor conductor of heat.

They are esters of fatty acids.

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

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Fractional distillation

sublimation

Roasting

Destructive distillation

Incomplete combustion of alkanes produce.

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Carbon dixoide only

Carbon monoxide only

Carbon monoxide carbon black and water

Carbon dioxide and carbon black

All bases turn red litmus

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Red

Blue

Pink

White

The % age of carbon in peat is :

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60%

70%

80%

90%

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