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प्रश्न
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Industrial waste
उत्तर
Industrial waste is the waste that is produced from industries during the manufacturing process. For example pieces of metals, plastic, chemicals, etc. Industrial wastes are also a major source of environmental pollution. They lead to air and water pollution. The fumes which are generated from industries are highly poisonous and directly affect the respiratory systems of animals, humans and birds. The industrial waste materials are rich in toxic substances and heavy metals such as mercury, lead, copper, and cadmium. Mercury is a toxic substance, which exhibits the phenomenon of biomagnification when it enters the ecosystem via the food chain. Since these chemicals cannot be decomposed, they keep on accumulating at each trophic level. The maximum concentration is accumulated at the top carnivore’s level. This increase in the concentration of pollutants or harmful chemicals with the increase in trophic level is called biological magnification.
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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.
Give any two ways in which non-biodegradable substances would affect the environment.
How can the wastes such as paper, plastic and metal objects be disposed of?
Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.
Give a reason for the following :
Landfills are coming up fast near large cities.
The question has four options. Choose the correct answer:
Sewage is broken down in
What type of garbage is thrown in green bins?
How can the non-useful component be reused?
Why should we not bum dried plant leaves and husk? What is the best way to get rid of them?
Observe the bins and waste material heaps and suggest what materials can be used for preparing handicrafts materials.
Can you make something useful of these waste material?Powder containers, cold-drink cans, plastic bottles, shoe-box.
Which of the following is 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 poem written below and then answer the questions from the information gathered from the book or elsewhere.
Name the two kinds of waste that need to be separated from each other in two different waste bins.
What happens when
Tea leaves, cotton swabs and old soft toys are thrown into the drain.
One of the best solutions to get rid of non-biodegradable wastes is ______.
