state two physical features of coal and petroleum
Answers
Answer:
coal tar and coal gas
Explanation:
Coal tar is a mixture of different carbon compounds. It thick, black liquid with unpleasant smell. ... Note: These days bitumen a petroleum product is used in place of coal tar for metalling the roads.
Coal Gas: Coal gas is mainly a mixture of hydrogen, methane and carbon monoxide.
Coal
The porosity also affects the physical and chemical properties of coal. The surface and body of coal are full of holes composed of organic matter and minerals, and coal is a porous solid substance with different pore size distributions; micropores are the main type of pore.
Petroleum
Petroleum consists basically of compounds of only two elements, carbon and hydrogen. Because these elements combine in a large variety of complex ways, however, crude oils vary greatly in their chemical composition. Their physical properties such as color, specific gravity, and viscosity also vary widely.