Advertisements
Advertisements
Question
Explain why is it no wise to regard wood as a renewable sources of energy.
Advertisements
Solution
Use of wood is a renewable source but is not advised to use, because saplings take a long time to become a tree.
APPEARS IN
RELATED QUESTIONS
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
The calorific values of three fuels A, B and C are 33 kJ/g, 48 kJ/g and 150 kJ/g, respectively. A is solid, B is liquid and C is a gas at room temperature. One combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal? Give two reasons to support your answer.
What are the various fuels which are used to generate electricity in a thermal power plant?
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
Write any two advantages of using biogas.
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
Describe the four major types of coal.
State the main difference between the renewable and non-renewable sources of energy.
Sunlight and air are inexhaustible natural resources. Comment.
Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible? If yes, why? If not, why not?
