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CHEMISTRY

Chemistry
Which one of the following is known as the 'brown coal'?

Lignite
Coke
Anthracite
Bituminous

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Chemistry
L.P.G. is mostly liquefied

Butane
Oxygen
Hydrogen
Methane

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Chemistry
Which one of the following is not coal variety?

Lignite
Peat
Dolomite
Bituminous

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Chemistry
Which of the following is used to increase the anti-knocking property of petrol ?

Tetraethyl lead
Trimethyl lead
Tetramethyl lead
Triethyl lead

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Chemistry
The quality of petrol is expressed in terms of

Octane number
Added unlead compounds
Gold number
Cetane number

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