Question # 1

The % age of carbon in peat is :

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60%

70%

80%

90%

____________ is synthetic fiber.

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Cotton

Woal

Nylon

Silk

What is the percentage of carbon in anthracite?

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60%

70%

80%

90%

Pitch is black residue of

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Coke

Coal-tar

Coal

Coal gas

Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

The % age of carbon is bituminous is

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60

70

80

90

Alkanes are also called:

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olefins

Paraffins

aliphatic compound

cyclic compounds

Percentage of methane present in natural gas is.

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75%

80%

85%

90%

Coal is the mixture of

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Hydrogen

Methane

Carbon monoxide

All

The % age of carbon is lignite is

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60

70

80

90

Formula of Decane is.

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C₁₀H₂₀

C₁₀H₂₂

C₁₀ H₄

C₁₀H₁₆

General formula of alcohols is:

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RCHO

ROH

O= R - C -OH

O = R - C- R

Coal gas is mixture of

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CO and CH₄

CO . CH₄. CO₂

CO, CH₄, H₂

CO, H₂ and CO₂

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