Long answer type questions
.
Write the characteristics of an ideal fuel.
Draw a well-labelled diagram to explain the different zones of a candle flame.
3.
What is fuel? Write its types and give two examples each. Also, mention uses of any two fuel from each
category
4. Explain the process of refining of petroleum
5. State the harmful effects caused by the air pollutants released during the combustion of
fossil fuels.
6. Write the characteristics of various products obtained after the processing of coal.
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