Question : Which is the most popular coal for commercial use?
Option 1: Bituminous
Option 2: Anthracite
Option 3: Peat
Option 4: Lignite
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Correct Answer: Bituminous
Solution : The correct answer is Bituminous.
The most common type of coal used in commerce is Bituminous. It contains 60 to 80 per cent carbon. The coal is suitable for commercial usage due to its calorific value, volatility and ash concentration. Bituminous coal offers the widest range of commercial applications among all coals due to its abundance, low moisture content (less than 3 per cent), relatively high heat value and simplicity of transportation and storage.
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Question : Which of the following is the highest quality coal?
Question : Which of the following coals contains ninety per cent carbon?
Question : Which of the following is not a commercial source of energy ?
Question : Peat coal has ______ carbon and ______ moisture content.
Question : Which one of the following is a good electrical conductor?
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