What is the term for the addition of moisture to coal to enhance its combustion?

• A. Tempering
• B. Moistening
• C. Hydration
• D. Condensation

Answer: (A)

The term for the addition of moisture to coal to enhance its combustion is known as tempering. This process involves carefully adding moisture to the coal, which can help improve the efficiency of combustion by ensuring more complete burning. By optimizing the moisture content, tempering can aid in controlling the temperature during combustion and reduce the production of harmful emissions while improving the overall energy output from the coal. This technique is important in industrial and utility applications where maximizing efficiency and minimizing environmental impact are crucial.

Moistening, hydration, and condensation all refer to processes involving water, but they do not specifically pertain to the application of moisture in the context of coal combustion like tempering does.