Tag: disposal of waste

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Questions Related to disposal of waste

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Scrubbers were used 

  1. To make air free from microorganisms.

  2. To make air free from dust and gases.

  3. To make air free from solid particles.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Scrubbers are air pollution control devices used to remove harmful gases and particulate matter (dust) from industrial exhaust streams. They work by spraying a liquid to capture the pollutants.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

What measures should be taken for waste disposal?

  1. Segregation of biodegradable and non-biodegradable wastes.

  2. Safe disposal of plastic bags.

  3. A compost pit for kitchen wastes.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Measures for disposal of wastes:
(a) Segregation of biodegradable and non-biodegradable wastes.
(b) Safe disposal of plastic bags.
(c) Vegetable/fruit peels can be placed near trees/plants, which on decomposition will enrich the soil with nutrients.
(d) Give paper wastes for recycling.
(e) Prepare a compost pit for kitchen wastes.
Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Use of sewage, domestic waste, farm yard manure, etc. will decrease the fertility of the degraded lands.

  1. True

  2. False

  3. Nither

  4. Either
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Organic waste, sewage, and manure are rich in nutrients and organic matter, which improve soil structure and fertility. Therefore, their application increases, rather than decreases, the fertility of degraded lands.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Why is improper disposal of waste a curse to environment?

  1. Wastes pollute our environment

  2. Waste has very harmful effect on the living organisms

  3. Waste decreases the fertility of the soil

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Improper disposal of waste pollutes our environment (air, water and soil). Improper waste storage or disposal frequently contaminates surface ground water supplies. The radioactive waste causes harmful effect on the living organism. The non-biodegradable waste decreases the microbial flora of the soil.
So, the correct answer is option D.
Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which solid waste disposal mehod is cheaper and simpler?

  1. Pulverization

  2. Compositing

  3. Sanitary Landfilling

  4. Incineration
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sanitary landfilling is cheaper and simpler than incineration or specialized recycling. It involves compacting waste in lined pits and covering with soil daily, requiring minimal infrastructure compared to other methods.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which of the following are environmental friendly practices?

  1. Carrying cloth bags for shopping

  2. Switching off light and fans when not in use

  3. Using public transport

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All listed practices, including using cloth bags, conserving electricity, and utilizing public transport, reduce resource consumption and environmental impact. They are all recognized as environmentally friendly.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which of the following statements is correct?   

  1. There are working 'EcoSan' toilets in many areas of Kerala and Sri-Lanka

  2. Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc. that are collected and disposed by the municipality

  3. In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
EcoSan toilet has emerged as a sustainable concept and is prevalent in Delhi, Kerala, and Mumbai for footpath and slum dwellers. These are solid wastes from home, offices, stores, schools, hospitals, hotels etc. These domestic solid wastes one usually, thrown in municipal garbage collecting cans. a depression or trench is made in the ground and wastes are dumped into it after compaction and covered with dirt every day. the above statements are correct.

So, the correct answer is 'All of these'.
Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which method is used if suitable dumping areas are not available?

  1. Incineration

  2. Compositing

  3. Pulverization

  4. Disposal into the Sea
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When land is scarce or dumping areas are unavailable, incineration is the preferred method because it significantly reduces the volume of waste. This makes it ideal for urban areas with limited space.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

The process of heating the waste at high temperature is called as ________.

  1. Land-filling

  2. Pyrolysis

  3. Decomposing

  4. Incineration
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scientific method of solid waste management where the waste is heated to high temperature. This process is beneficial for obtaining gas and electricity. The method is suitable for municipal solid waste management.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Solid matter from land washed annually into oceans is

  1. 330 million tonnes

  2. 3300 million tonnes

  3. 3.3 million tonnes

  4. 33 million tones
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Approximately 3300 million tonnes of solid matter from land is washed annually into oceans. Apart from the soil, glasses, metals and plastics are also washed into oceans. This matter spreads over the sea floor.

Thus, the correct answer is '3300 million tonnes.'