Plastics and Role in Environment


Synthetic Fibres and Plastics II - Concepts
Class - Navodaya Entrance 9th Subjects
 
 
Concept Explanation
 

Plastics and Role in Environment

Plastics can cause various health hazards. This is because plastics are non-biodegradable. That is they cannot be decomposed by microorganisms. Reducing the usage of plastics and recycling plastic object are two ways of countering the harmful effects associated with plastic disposal.

Harmful Effects Of Plastic :

  •  Recycling plastic is expensive. Scientists have now developed biodegradable plastics that will rot, as it is acted upon by bacteria, it is not yet used on a large scale.
  •  When burnt, plastics give off poisonous fumes. PVC on burning gives fumes of hydrogen chloride.
  •  The plastics used for packing is not biodegradable and takes thousands of years for a plastic bag to disintegrate.
  • To aid recycling of plastic garbage, two types of bins are made available by municipality:

              a. Green bin: that accommodates biodegradable wastes.

              b. Blue bin: that accommodates waste like plastic and glass.

    Few things that can be done to limit the harmful effects associated with plastics:

              1.    Do not accept plastic bags when you go for shopping.

              2.    Keep plastic bag clean and dry for recycling.

              3.    Do not throw plastic waste at roadside or in water bodies.

              4.    Use separate garbage bins at your home for biodegradable and non- biodegradable wastes.

              5.    Reproduce percolation of water into the soil.    

    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Burning of plastic causes ______________

    Right Option : B
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    Explanation
    Question : 2

    _____________  are generally the bad conductors of heat.

    Right Option : D
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    Explanation
    Question : 3

    _________________  is a property by which material can moulded into various forms.

    Right Option : A
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    Explanation
     
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