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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
Name the various modes of waste disposal.
Identify biodegradable waste from the following:
peels of vegetables and fruits, metallic cans, broken plastic toys, broken glass cover, grass, paper, ball point pen refill
Multiple Choice Type:
The most convenient reusable wastes are
Differentiate between degradable and non-degradable type of waste.
Give a reason for the following :
Landfills are coming up fast near large cities.
Give a reason for the following :
Why is municipal sewage is first separated into degradable and non-degradable wastes?
Mention Whether the Following Statement is True (T) Or False (F).
Flyash is the gaseous waste of cement industry.
The question has four options. Choose the correct answer:
Composting is carried out from
The question has four options. Choose the correct answer:
Fish die in water bodies polluted by sewage due to
What are blue coloured bins used for?
Observe the bins and waste material heaps and suggest what materials can be used for preparing handicrafts materials.
First link in any food chain is usually green plants because ______.
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) ______ |
What happens when cooking medium is made to flow down a drain?
List two classes into which garbage is classified.
"The change in packaging has resulted in waste becoming non-biodegradable." Giving two examples from daily life, justify this statement.
Choose the odd one out from the following terms and name the category to which the others belong:
