What are the advantages of using CNG and LPG as fuels?
Advantages of CNG—Compressfed Natural Gas and LPG—Liquefied Petroleum Gas are:
i) Both fuels burn with clean flame that does not produce smoke.
ii) They give more heat and energy as compared to other fuels.
Process of separation of different constituents from petroleum is called __________.
Fossil fuels are ________, ________ and ________.
Name the petroleum product used for surfacing of roads.
Describe how coal is formed from dead vegetation. What is this process called?
