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प्रश्न
What is the main difference between renewable and non-renewable energy resources?
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उत्तर
Renewable Resources
- These are those resources that can be renewed in a short time.
- These do not cause any pollution to the environment.
- These are the free gifts of nature.
- Air, water, and solar energy are examples of renewable resources.
Non-Renewable Resources
- These are those resources that cannot be renewed in a short time.
- These cause pollution to the environment.
- These are not free gifts of nature.
- Coal, Petroleum, and some minerals are examples of non-renewable resources.
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संबंधित प्रश्न
Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
The fuel having the lowest calorific value is:
(a) coal
(b) wood
(c) charcoal
(d) kerosene
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
Explain how, sun is considered to be the ultimate source of fossil fuels
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
The gravitational pull of the moon cause the sea-water to rise periodically.
(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
The fossil fuel whose known reserves in the earth are expected to last for the minimum period is:
(a) coal
(b) uranium
(c) petroleum
(d) natural gas
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
Why should we conserve the non-renewable sources of energy?
Why is charcoal considered better fuel than wood?
What is non-renewable resources?
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
