Fuels and Combustion
Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of

MgO & Na₂CO₃
BaSO₄ & NaCl
MgSO₄ & BaCl₂
MgCO₃ & NaCl

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Fuels and Combustion
Anthracite can be used for

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

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