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प्रश्न
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Plastic waste
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
"Affluent life style has a negative effect on the environment." Justify this statement with the help of an example.
Name the various modes of waste disposal.
Differentiate between degradable and non-degradable type of waste.
What do we do to the useful components (biodegradable) of the garbage?
Why should we not bum dried plant leaves and husk? What is the best way to get rid of them?
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
Which of the following is non- biodegradable?
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?
Read the items mentioned in Columns I and II and fill in the related process in Column III
| Column I | Column II | Column III | |
| (a) | Organic waste | Earthworms | (i) ______ |
| (b) | Garbage | Dig pit and fill it with garbage | (ii) ______ |
| (c) | Old newspaper | Paper bags | (iii) ______ |
Write 3 sentences on what comes to your mind when you chance to see the following.
A rag picker
What is meant by garbage?
List two classes into which garbage is classified.
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.
Which of the following features relates to biodegradable substances?
Choose the odd one out from the following terms and name the category to which the others belong:
Choose the odd one out from the following terms and name the category to which the others belong:
