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3084. Which is the most matured coal?

September 7, 2025 by Admin

Lignite

Bituminous

Semi-anthracite

Anthracite

✅ The correct answer is option D.

Categories Chemical Engineering, Engineering, Fuel and Combustion MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Fuel and Combustion MCQs

3079. Coking coals are invariably

3090. Froth floatation is used for

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