Fuels and Combustion
Which of the following is a rich fuel gas?

Refinery gases
None of these
Coal gas from underground gasification of coal
Producer gas

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Fuels and Combustion
Anthracite can be used for

Recarbonising steel
All of these
Making carbon electrodes
Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke

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