Question # 1

Which one of the following is a synthetic fibre?

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Cotton

Wool

nylon

silk

Formula of acetaldehyde is:

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Coal having 90% carbon contents is called.

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Peat

Lignite

anthracite

bituminous

Which one contains double covalent bound?

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Pentane

Ethylene

Acetylene

All

Which one contains triple covalent bond?

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Pentane

Ethylene

Acetylene

All

Which one of the following is a synthetic fiber:

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cotton

wool

nylon

silk

The % age of carbon in peat is :

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60%

70%

80%

90%

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

General formula of Alkane is.

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C₁₀H_2n-2

C₆H₂₆

C₁₁H_2n-2

C_nH_2n-2

Which one of the following is not a fossil fuel?

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Coal

Natural gas

Bio gas

Petroleum

Wood contain the amount of carbon.

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70%

80%

60%

40%

Coal is blackish complex mixture of compounds of

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Carbon

Hydrogen

oxygen

All

The % age of carbon is lignite is

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60

70

80

90

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