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प्रश्न
The question has four options. Choose the correct answer:
Sewage is broken down in
विकल्प
primary treatment
secondary treatment
tertiary treatmen
all the above
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उत्तर
secondary treatment
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संबंधित प्रश्न
How are most of the solid wastes in urban areas disposed of?
Differentiate between degradable and non-degradable type of waste.
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
Correct the definition of certain terms given below by changing only one word.
Compost: Substances converted into manure for use in industries.
Correct the definition of certain terms given below by changing only one word.
Landfill: Garbage buried under water in an area.
What happens when insecticides, motor oil, paints are poured down the drain?
List two classes into which garbage is classified.
Write one difference between biodegradable and non-biodegradable wastes. List two impacts of each type of the accumulated waste on environment if not disposed off properly.
