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Good sources of energy:
• What is a good source of energy?
• Energy output per unit volume:
• The energy output per unit volume (or mass) of good source of energy should be high. The gas in LPG cylinder can be used by family of average size to cook food for about a month. To cook same amount of food using wood, we need a roomful of wood.
• Steady availability: The energy source should be available readily and for a long time.
• Safe and easy to use: The source of energy has to be safe and easy to use, A fuel that produces a lot of smoke is not a good source of energy, since it is not safe for people’s health. A nuclear power plant is not easy to build and operate.
• Easy to store and transport: Most common sources of energy such as coal, petrol, and LPG need to transport to users from their points of production.
• Economical: The source of energy has to be economical. Hydrogen is excellent fuel. But it is not widely used as it is costly to produce, store and transport it.
• What is a good fuel?
• How much heat does it release on burning?
• It should not produce a lot of smoke.
• The fuel should be available easily.