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11 questions
Which of the following is/ are natural resources?
Tea & air
Cooked Food & water
Air & soil
Plants and animals
Toffee & Cola
What do fuels combine with to produce heat and light?
Carbon dioxide
Carbon monoxide
Hydrogen
Oxygen
What are the most common sources of energy used in automobiles?
Wood and coal
Petroleum and diesel
LPG and cow dung
Natural gas and coal
Identify the fuel that leaves more smoke and ash on burning.
Solid fuel
Liquid fuels
Gaseous fuels
Any one of the above
Which of the following properties is NOT a characteristic of a good fuel?
High Ignition temperature
Low cost
Causes minimum pollution
Readily available
Why are trees a natural resource?
because they come from Earth
because they can never be replaced
because they are made by humans
because they are used for many things
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