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प्रश्न
What is sewage? How is sewage disposed of?
उत्तर
The dirty drain water containing urine and faeces that is carried from our homes by underground pipes (called sewers) is called sewage. It is disposed of by treating it at a sewage treatment plant.
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संबंधित प्रश्न
"Affluent life style has a negative effect on the environment." Justify this statement with the help of an example.
Match the items in Column I with as many times as possible in Column II.
|
Column I |
Column II |
|
1. Cow dung |
(i) Sugarcane |
|
2. Bagasse |
(ii) Raddiwalas |
|
3. Old newspapers |
(iii) Manure |
Mention whether the following statement is true (T) or False (F).
Electricity is one of the primary needs of human society.
The question has four options. Choose the correct answer:
Sewage water is purified by
How can the non-useful component be reused?
Which of the following is non- biodegradable?
Beera, a farmer would clear his field every day, and burn dry leaves fallen on the ground. After some time he found that those living in huts near his field were suffering from cough and breathing problems.
(i) Can you explain why?
(ii) Also suggest an environment-friendly way to dispose of the dry leaves.
What is meant by garbage?
Choose the odd one out from the following terms and name the category to which the others belong:
Which of the following is non-biodegradable?
