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प्रश्न
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Plastic waste
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उत्तर
Plastic is something which we use on a daily basis and has become an inseparable part of our lives. Despite its various uses, one of the major disadvantages of plastic is that it is an environmental pollutant. Plastic is considered non-biodegradable because it is made of very long polymer chains, which take quite a long time to degrade. Moreover, none of the saprophytes contain enzymes to digest plastic and obtain its nutrients. Since plastic is non-biodegradable, its proper disposal is also important or it may lead to problems like choking of sewage system, resulting in overflow of drains and death of animals by consuming plastic bags.
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संबंधित प्रश्न
Why are some substances biodegradable and some non-biodegradable?
What is meant by incineration? for what purpose is it used?
Differentiate between degradable and non-degradable type of waste.
Give reason for the following :
Broken glass utensils are a kind of non-degradable waste.
Mention whether the following statement is true (T) or False (F).
Electricity is one of the primary needs of human society.
What are Composting ? Explain its Process
Give two examples of domestic wastes.
What type of garbage is thrown in green bins?
Municipality provides two types of dustbins for garbage collection. One coloured with blue colour and other with green colour. From following wastes which you will put in the which dustbin?
Plastic materials, metals and glass items, wastes of plants and animals, peels of fruits and vegetables, dried leaves and twigs, remains of meat like flesh and bones.
Which kind of garbage is not converted into compost by the redworms?
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
Which of the following is biodegradable waste?
Which of the following activities does not reflect responsible behaviour with regard to waste disposal?
To what use can you put the following kind of garbage and how?
Rotting smelly 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) | Egg shells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Left over food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
What happens when insecticides, motor oil, paints are poured down the drain?
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.
