Question

Destructive distillation of coal gives a thick black liquid​ with an unpleasant smell, called ________ which is used for _______.

• A. coke; metal extraction
• B. coal tar; surfacing of roads
• C. coal tar; power generation
• D. coke; power generation

Answer 1

The correct option is B coal tar; surfacing of roads

Coal tar is a thick black liquid which has an unpleasant smell and contains a mixture of carbonaceous substance. It is a derivative of coal obtained by destructive distillation and is mainly used for the surfacing of roads.