Final answer:
Coal that is used in a coal-fired power plant is ground to a fine powder consistency and blown into furnaces to generate heat and produce electricity.
Step-by-step explanation:
The accurate description of coal used in a coal-fired power plant is:
2. Ground to a face-powder consistency and blown into furnaces
Coal used in coal-fired power plants is typically pulverized into fine powder, often as fine as face powder. This finely ground coal is then blown into the combustion chambers of the furnace with high-pressure air. By pulverizing coal into a powder form, it significantly increases the surface area available for combustion, allowing for more efficient and thorough burning. This method ensures a consistent and controlled combustion process, optimizing heat production to generate steam that drives turbines to produce electricity in the power plant.