The percentage of carbon in bituminous and anthracite coal is:

• a.) 60% and 20%
• b.) 78% and 94%
• c.) 90% and 60%
• d.) 20% and 40%

The carbon content in different types of coal varies significantly. For bituminous coal, the carbon percentage is typically around 60% to 78%. In contrast, anthracite coal, which is a higher grade of coal, contains about 86% to 97% carbon. Based on the options provided, the closest match is:

Correct Answer

b.) 78% and 94%

Explanation

This means that bituminous coal has a carbon content of approximately 78%, while anthracite coal can have up to 94% carbon. This high carbon content makes anthracite the most efficient type of coal for energy production.

Key Points

• Bituminous coal: 60% to 78% carbon
• Anthracite coal: 86% to 97% carbon