Advertisements
Advertisements
Question
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
Solution
Biowastes and sewage can be disposed of by using them in large gas plants to produce biogas and manure.
This method is advantageous to us for the following reasons.
1. It is a safe method for large-scale utilisation of biowaste.
2. The biogas produced can be used as a fuel.
3. Good quality manure can be obtained by this method.
APPEARS IN
RELATED QUESTIONS
What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy.
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Explain why, natural gas is considered to be a good fuel.
Fill in the following blank with suitable word:
Biomass is another form in which ........... energy manifests itself.
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
Which of the two is more energy efficient: filament type electric bulb or CFL? Why?
An energy efficient devices for producing light is:
(a) DLF
(b) CFL
(c) FCL
(d) LPG
What are non-renewable resources of energy? Give two examples of such resources.
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?