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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

Write note. Industrial waste - Science and Technology

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प्रश्न

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Industrial waste

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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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पाठ 9: Environmental Management - Exercise [पृष्ठ १०७]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 9 Environmental Management
Exercise | Q 4.4 | पृष्ठ १०७

संबंधित प्रश्‍न

Why are some substances biodegradable and some non-biodegradable?


Give any two ways in which biodegradable substances would affect the environment.


Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.


Mention Whether the Following Statement is True (T) Or False (F).

Flyash is the gaseous waste of cement industry.


What are the most important steps in waste management?


The question has four options. Choose the correct answer:

Fish die in water bodies polluted by sewage due to


The question has four options. Choose the correct answer:

A huge quantity of sewage is dumped in a river. The BOD will


List waste products produced from an industry.


List the biodegradable and non-biodegradable waste products in your school What are the best ways to get rid of this garbage?


Can you make something useful of these waste material?Powder containers, cold-drink cans, plastic bottles, shoe-box.


Discuss:

Is garbage disposal the responsibility only of the government?


Do you think it is better to use compost instead of chemical fertilizers? Why?


Correct the definition of certain terms given below by changing only one word.

Compost: Substances converted into manure for use in industries.


Provide a suitable term that expresses the meaning of the following statement.

Greeting cards made from newspaper.


To what use can you put the following kind of garbage and how?

Rotting smelly garbage


Beera, a farmer would clear his field everyday, and burn dry leaves fallen on the ground. After sometime he found that those living in huts near his field were suffering from cough and breathing problems.

  1. Can you explain why?
  2. Also suggest an environment friendly way to dispose the dry leaves.

What happens when cooking medium is made to flow down a drain?


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?


Give two examples of Non-biodegradable wastes.


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