Carbon dioxide (CO2).
When coal burns in air, the main gases formed are carbon dioxide (CO2), water vapor (H2O), carbon monoxide (CO), and sulfur dioxide (SO2). The exact composition of gases produced can vary depending on the type of coal and combustion conditions.
coal pollutes the air by smoke and it burns easily plus cows eat grass
Steam
The pollutants produced by burning coal are Mercury-HG Sulphur oxide-SO2 Nitrogen oxides-NO2
blue
The gas produced when coal is heated in the absence of air is called coal gas. It is a mixture of various gases such as methane, hydrogen, carbon monoxide, and carbon dioxide.
Coke is produced from coal through a process called destructive distillation. In this process, coal is heated in the absence of air to drive off volatile components, leaving behind coke. The coke produced is a porous material that is used as a fuel and as a reducing agent in the smelting of iron ore.
carbon dioxide
Coal production statistics from the US Department of Energy indicate that in 2007, the US produced (and presumably burned) 1.146 billion tons of coal. China produces and burns slightly more.
Anthracite coal burns the hottest among the various forms of coal. It has a high carbon content and burns with a clean blue flame, making it a popular choice for heating purposes.
Anthracite coal burns the hottest among the types of coal as it has the highest carbon content and lowest moisture content.
it uses brunes coal it burns coal