CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
________ is used for surfacing of roads now-a-days.
Bitumen
________ is the pure form of carbon.
Coke
Refining of petroleum is also called ________ of petroleum.
fractional distillation
Anaerobic thermal degradation of wood is called ________.
carbonization
________ has largely contributed to the global warming.
Carbon dioxide