Table of Contents
Coal :
Coal is a combustible black or brownish-black sedimentary rock, formed as a result of the compaction and induration of plant debris. Coal is a fossil fuel and is the largest source of energy for the generation of electricity in the world.
Tar :
Tar is a black, sticky, viscous liquid that is produced as a by-product of the destructive distillation of coal. It is used as a roofing material, as a sealant, and as a component in products such as asphalt, roofing felt, and shingles.
Coal Gas :
Coal gas is a flammable gas that is made by heating coal in the presence of air. The gas is used to produce light and heat, and it is also used to power engines.
Coal gas is produced by heating coal in the presence of air. The coal is heated until it breaks down into a gas, and then the gas is collected and used for lighting and heating. Coal gas can also be used to power engines.
Coal gas is a very important source of energy. It is used to produce light and heat, and it is also used to power engines. Coal gas is a very clean source of energy, and it is much cheaper than other forms of energy such as oil and gas.
