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25 questions · timed · auto-graded

Question 13 Marks
Explain the need for waste management?
Answer
(i) Waste management is important as it saves the environment from the toxic effects of inorganic and biodegradable element present in waste.
(ii) Mismanagement of waste causes pollution of land, water, air, soil, etc.
(iii) It has adverse effect on human health and negative impact on environment.
That is why to avoid, these issues, waste must be managed.
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Question 23 Marks
How will you manage the waste at home?
Answer
(i) Segregate the waste as biodegradable and Non-biodegradable at home. Old footwear, clothes, bags, etc. can be given to the needy.
(ii) We can eat the leftover food later by storing it in fridge.
(iii) Old medical pills, shoe polish, medicine bottles, batteries, etc. should be disposed separately.
(iv) E-waste such as CDs, old laptops, computers, etc. must be given for the recycling.
(v) We will collect it in separate containers and dispose as per the feature.
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Question 33 Marks
What are the benefits of landfill?
Answer
(i) The land gets levelled.
(ii) It can be converted into stadium or park or it can be used to carry-out planting of trees.
(iii) The waste also gets disposed. The spread of diseases and foul smell are also prevented.
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Question 43 Marks
What steps should be taken to manage increasing generation of waste?
Answer
(i) People must be encouraged to control the ever increasing population.
(ii) Creating awareness such as Swacchh Bharat, must be implemented.
(iii) Adopting eco-friendly and sustainable methods of waste management.
(iv) Passing strict laws against polluting the environment by imposing heavy fines.
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Question 53 Marks
How can you as a student, help in the reduction of waste?
Answer
(i) As a student we can segregate the waste into biodegradable and non- biodegradable waste at our home, and sending them for recycling or reusing them.
(ii) We can use only that much, how much is necessary.
(iii) We can buy just enough number of clothes and necessary articles to reduce production of more waste.
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Question 63 Marks
What is landfill? State its advantages and disadvantages.
Answer
(i) It is a process in which an uneven area which is away from the city or water reservoir is selected where non-biodegradable waste which cannot be recycled is dumped and clay is spread over it. Later it is compacted levelled with by a bulldozer.
(ii) Advantage: Waste gets disposed without spreading smell other ill effects. Later this land may be developed as sport complex or garden.
(iii) Disadvantage: Harmful chemicals present in it may get percolated and pollute the ground water.
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Question 73 Marks
What are the effects of dumping garbage in the open?
Answer
Solid waste carried to outskirts and dumped. Their effects are:
(i) Waste comes in contact with water sources and pollute it.
(ii) It becomes habitat to microorganism and diseases.
(iii) Many wetlands get choked.
(iv) Death of aquatic ecosystem due to eutrophication.
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Question 83 Marks
What are the effects of waste generation?
Answer
Following are the effects of waste generation:
(i) Landscape degeneration means, the quality of land is getting reduced.
(ii) Pollution of air, water and soil.
(iii) It results into health problems for the people coming in contact with waste.
(iv) Loss of terrestrial and aquatic life.
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Question 93 Marks
Differentiate between Open dumping and Composting.
Answer
Open dumpingComposting
(i)It's disposal method which is cheapest and easiest in which waste is dumped outside the residential area.It involves the microbial action on biodegradable waste to dispose them
(ii)It's ecologically harmful.It does not cause ecological damage.
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Question 103 Marks
Differentiate between Biodegradable and Non- Biodegradable
Answer
BiodegradableNon-Biodegradable
(i)The biodegradable wastes break down by the action of decompose by microorganism.The non-biodegradable wastes cannot be decomposed by the action of decompose by microorganism.
(ii)It is environment friendly.It is harmful to the environment and causes pollution.
(iii)Example: Waste paper.Example: Plastic bags.
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Question 113 Marks
Composting is preferred over open dumping.
Answer
(i) Composting involves the microbial action on biodegradable waste to dispose them. It does not cause ecological damage.
(ii) Open dumping disposal method is cheapest and easiest in which waste is dumped outside the residential area. But this method is not eco-friendly.
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Question 123 Marks
Landscape near cities generally get spoiled.
Answer
(i) Spoilage of landscape is due to improper disposal wastes, especially solid waste.
(ii) As cities are overcrowded, people throw the garbage in whatever place available.
This causes the landscape to get spoilt.
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Question 133 Marks
Many cities like Mumbai, Thane, and Nasik have adopted Ghanta-gadi system for waste collection.
Answer
(i) Ghanta gadi means the bell-ringing vehicle provided by Municipal Corporations for point-to-point collection of Municipal Solid Waste.
(ii) This reduces the garbage being thrown on roads and in water bodies and thus play important role in reducing the impact of waste.
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Question 143 Marks
Landfill sites are generally in the outskirts of the city or town.
Answer
Following are the reasons for this:
(i) The landfill may give out a bad odour and also cause pollution of land.
(ii) Landfills results into the contamination of surrounding water supplies, aquifers and soil by leachate.That is why, these sites are away in order to reduce the impact of waste.
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Question 153 Marks
Waste segregation is important.
Answer
It is important due to the following reasons:
(i) It helps in better waste management.
(ii) It helps to conserve natural resources.
(iii) It helps in controlling pollution.
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Question 163 Marks
Plastic and polythene products must be banned.
Answer
(i) Plastics do not get naturally disintegrated very easily and their disposal becomes big issue.
(ii) They block rivers, streams, drainage pipes too and cause big environmental concern.
That is why, plastic must be banned.
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Question 173 Marks
Trees must be planted in the industrial areas.
Answer
(i) Disposal of gaseous waste is a big problem.
(ii) Trees absorb carbon dioxide and produce oxygen.
That is why this gaseous waste gets managed effectively. Moreover, trees increase the beauty of the surrounding and their decayed matter produce humus.
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Question 183 Marks
Reuse is an effective method of waste management.
Answer
(i) Reuse aims at making good use of previously used items, without processing them.
(ii) Reuse prevents objects or materials from becoming waste and thus helps to reduce environmental degradation due to pollution.
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Question 193 Marks
Recycling must be encouraged.
Answer
(i) Recycling paper, plastic, wood, metals, etc. save our existing forests and other national resources.
(ii) It is helpful in protecting ecosystems and wildlife.
(iii) Recycling helps in lowering the waste generation.
There are many such advantages and that is why recycling must be encouraged.
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Question 203 Marks
Government has assigned the work of waste management to Ministry of Urban development.
Answer
Govt. of India has given the responsibility to the Ministry of Urban Development to prepare the municipal solid waste manual for urban local bodies for the easy and environment friendly waste management.
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Question 213 Marks
Awareness about waste management is necessary.
Answer
(i) Waste is hazardous in some way or the other way.
(ii) There is a great need to manage it but Government cannot implement safe disposal methods without the cooperation of people. That is why, awareness about it is important.
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Question 223 Marks
Judicious use of electric power, fossil fuel are the need of hour.
Answer
(i) These processes except for hydroelectricity generation need, fossil fuels which not only pollute the air, but also the water and land.
(ii) Their disposal is a big concern as they are injurious. That is why, Judicious use of electric power, fossil fuel are the need of hour not only to reduce waste but also conserve the natural resources.
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Question 233 Marks
Conscious consumerism is the need of the hour.
Answer
Following are the reasons for this:
(i) We save the natural resource.
(ii) We save the money.
(iii) We generate less waste and cause less pollution.
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Question 243 Marks
Composting is a very good method of waste disposal.
Answer
(i) Compost is rich in nutrients which can be used in gardens, horticulture, urban agriculture and organic farming.
(ii) The compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, and addition of vital humus and as a natural pesticide for soil.
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Question 253 Marks
Dumping method is not a correct method of waste disposal.
Answer
(i) Dumped waste material spoils the beauty of the environment.
(ii) Such waste materials produce foul odour due to decomposition.
(iii) Rainwater and run-off from the dumping ground may carry pollutants and toxic substances and can pollute the sources of water. That is why, it's not a correct method.
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