Advertisements
Advertisements
प्रश्न
Why should we conserve the non-renewable sources of energy?
Advertisements
उत्तर
We should conserve the non-renewable sources of energy because if these sources once finished, cannot be regenerated over a reasonable period of time.
APPEARS IN
संबंधित प्रश्न
On what basis would you classify energy sources as
(a) renewable and non-renewable?
(b) exhaustible and inexhaustible?
Are the options given in (a) and (b) the same?
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.
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 is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
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
Fill in the blank
__________ are examples of renewable energy resources.
Which of the following is a non-renewable source of energy?
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Write True/False against the following statement.
Resources which are present in unlimited quantity in nature are called exhaustible natural resources.
