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प्रश्न
Name the various modes of waste disposal.
उत्तर
The various modes of waste disposal are as follows.
1) Recycling
2) Preparation of compost
3) Incineration
4) Landfill
5) Sewage treatment
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संबंधित प्रश्न
Why are some substances biodegradable and some non-biodegradable?
Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.
List waste products produced from an industry.
The steps required for the conversion of kitchen garbage into manure are given below in a jumbled form.
(i) Put garbage in a pit
(ii) Cover the bottom of the pit with sand
(iii) Cover the pot loosely with a gunny bag or grass
(iv) Add worms
Which of the following shows the correct sequence of the above steps?
To what use can you put the following kind of garbage and how?
dry leaves collected in a garbage
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
| Garbage Items | Make manure or not | |
| (i) | Eggshells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Leftover food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
What happens when
Tea leaves, cotton swabs and old soft toys are thrown into the drain.
Which of the following features relates to biodegradable substances?
Define the following term:
Pollution
