What are the parameters based on which a fuel is selected? [2 MARKS]
Each point: 1 Mark The following parameters determine the selection of fuels :
1. Amount of energy released per unit mass.
2. Amount of smoke produced.
What is a fuel? On what parameters do we judge whether the fuel is good or not? [5 MARKS]
What are fossil fuels? Give examples. [2 MARKS]
What are the ways in which we can classify plants based on their mode of nutrition? Mention with examples. [2 MARKS]