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प्रश्न
What are the measuress adopted to prevent the spread of disease from sewage water?
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उत्तर
Following are the measuress adopted to prevent the spread of disease from sewage water:
- Sewage water must be disposed off in a suitable manner to prevent large scale outbreak of diseases and toxicity to living organisms.
- They should not be allowed to collect in the open.
- Sewage should be treated in sewage treatment plants wherein the pathogens are destroyed.
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संबंधित प्रश्न
Which of the following is the best method to dispose of biological wastes from hospitals?
(a) landfill
(b) recycling
(c) incineration
(d) composting
Write note.
Industrial waste
Give a reason for the following :
Landfills are coming up fast near large cities.
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 |
Give two examples of domestic wastes.
What do you do with the leftover food at home?
A garbage collector separate items mentioned below in the garbage into red, green and blue containers for their transfer to landfill, composting pit and recycling unit respectively.
Items:
- Plastic bags
- Newspaper and journals
- Screw and nuts
- Vegetable peels
- Metal chips
- Egg shells
Which items were transferred to which bin?
Read the items mentioned in Columns I and II and fill in the related process in the Column III
| Column I | Column II | Column III | |
| (a) | Organic waste | Earthworms | (i) ______ |
| (b) | Garbage | Dig pit and fill with garbage |
(ii) ______ |
| (c) | Old newspaper | Paper bags | (iii) ______ |
Which one of the following is a biodegradable waste?
