Question

Plaese answer it most important
1.On which basis metals are extracted with the help of coke.
2.Which we can called clean fuels.why?
3.What process is used in a refining of petroleum?
4.Give two harmful effects of using of fossil fuels.
5.Is the some residue left after the burning of CNG.If yes then why or if not then also why

Answer 1

we can call the fuel which produce less carbon di oxide as clen fuels.the process is petrol refining process.the harmful effects are global warming,it might cause acid rain.....

Answer 2

air pollution burning fossil fuels emits a number of air pollutants that are harmful to both the environment and public health sulfur dioxide emmissions,primary the result of burning coal contribute to acid rain and the formation of harmful particulate matter