Question

write the characteristic of Coal Tar and coal gas​

Answer 1

Coal gas, gaseous mixture—mainly hydrogen, methane, and carbon monoxide—formed by the destructive distillation (i.e., heating in the absence of air) of bituminous coal and used as a fuel. ... Coal tar and coke (qq.v.) are obtained as by-products.

Answer 2

Answer:Coal tar - Coal tar is a black liquid with very high viscosity, that is, it is very thick.  It is by product of coke's production. It is used to seal pitches in the roof. It is also used as insulating agent to protect the house from the outside weather. Coal tar also act as active ingredient in shampoo that treat head lice. 

Coal gas - Coal gas is made from coal by its destructive distillation and is flammable gaseous fuel. It includes number of gases like hydrogen, methane, carbon monoxide, carbon dioxide and nitrogen. This gas is used for illuminating and heating. 

Explanation: