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प्रश्न
The question has four options. Choose the correct answer:
Sewage is broken down in
पर्याय
primary treatment
secondary treatment
tertiary treatmen
all the above
उत्तर
secondary treatment
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संबंधित प्रश्न
We often observe domestic waste decomposing in the bylanes of our homes. List four ways to make the residents aware that the improper disposal of wastes is harmful to the environment and also for their own health.
Why are some substances biodegradable and some non-biodegradable?
Define electronic waste and list at least six items which come under this category.
The question has four options. Choose the correct answer:
Fish die in water bodies polluted by sewage due to
Choose the correct option:
The rotting of garbage is said to be completed when the garbage:
What will happen if garbage is left open in bin?
To what use can you put the following kind of garbage and how?
old newspapers
