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प्रश्न
What are fossil fuels?
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उत्तर
Fuels formed in the geological past from the remains of living organisms and plants etc. Examples of fossil fuels are coal, petroleum, and natural gas, etc.
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संबंधित प्रश्न
Why are we looking at alternate sources of energy?
Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Compare and contrast fossil fuels and the Sun as direct sources of energy
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
What are the various fuels which are used to generate electricity in a thermal power plant?
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
What are the disadvantages of burning fossil fuels?
The product of petroleum used to drive heavy vehicles like trucks is:
(a) petrol
(b) kerosene
(c) diesel
(d) carbon oxide
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name another element which is usually found in combination with X in fossil fuels.
What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
Compare and contrast biomass and hydroelectricity as sources of energy.
One of the following is not required in the formation of biogas in a biogas plant. This is:
(a) cow-dung
(b) water
(c) oxygen
(d) anaerobic bacteria
State whether the following is True or False.
Coal takes millions of years to form.
What are renewable energy resources?
Describe the four major types of coal.
State the main difference between the renewable and non-renewable sources of energy.
What is non-renewable resources?
Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one nonconventional source of energy.
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?
