Gujarat BoardEnglish MediumSTD 7ScienceWastewater Story1 Mark
MCQ
City garbage can be used to produce:
A
Sewage sludge
B
Useful articles
✓
Biogas and maure
D
All the above.
✓
Answer
Correct option: C.
Biogas and maure
City garbage can be decomposed to form biogas and manure as it contains raw materials that can be degraded by the action of microorganisms.
The microorganisms or decomposers convert the organic substances into simpler inorganic substances and in this process of decomposition biogas is formed.
Biogas can be used for cooking purpose and is a great alternative for fossil fuels because biogas doesn't cause pollution.
The nutrient $-$ rich manure is used in agriculture to enhance the growth of crops and plants.
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