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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
Which of the following is the best method to dispose of biological wastes from hospitals?
(a) landfill
(b) recycling
(c) incineration
(d) composting
Give a reason for the following :
Landfills are coming up fast near large cities.
Give two-ecofriendly ways of treating kitchen wastes.
The question has four options. Choose the correct answer:
A huge quantity of sewage is dumped in a river. The BOD will
Choose the correct option:
Landfill are is a/an:
What is a landfill?
What type of garbage is thrown in green bins?
Can you make something useful of these waste material?Powder containers, cold-drink cans, plastic bottles, shoe-box.
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
To what use can you put the following kind of garbage and how?
Rotting smelly garbage
What happens when cooking medium is made to flow down a drain?
What happens when insecticides, motor oil, paints are poured down the drain?
Answer the following question in one or two words or sentences:
Who, out of the following should properly dispose of the garbage – father, mother, elder brother, younger sister?
"The change in packaging has resulted in waste becoming non-biodegradable." Giving two examples from daily life, justify this statement.
Which of the following features relates to biodegradable substances?
