Advertisements
Advertisements
प्रश्न
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
Advertisements
उत्तर
The natural resources which are present in a limited quantity in nature and can be exhausted (used up) by human activities are called exhaustible natural resources, e.g. coal, petroleum, natural gas, minerals, forests, wildlife, etc.
It requires millions of years for the conversion of the dead organisms into petroleum from which petrol is separated. So, once the present stock of it gets exhausted, no new supplies of it will be available to us in the near future, whereas sunlight is present in an unlimited quantity in nature, so it is an inexhaustible natural resource. It is not likely to be exhausted by human activities.
APPEARS IN
संबंधित प्रश्न
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.
Which of the following is not a fossil source of energy?
(a) kerosene oil
(b) cow-dung cakes
(c) CNG
(d) coal
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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?
Choose the correct answer.
The coal that has the highest percentage of carbon is
State whether the following is True or False.
Coal takes millions of years to form.
Who is the odd one out?
In a hydro power plant ______.
Write about Renewable resources.
Exhaustible natural resources are
