Tag: waste generation and management

Questions Related to waste generation and management

Which of the following statements is correct?   

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

  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

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Correct Option: D
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'.

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

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

  1. Incineration

  2. Compositing

  3. Pulverization

  4. Disposal into the Sea

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Correct Option: A

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

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

  1. Land-filling

  2. Pyrolysis

  3. Decomposing

  4. Incineration

Show answer
Correct Option: B
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.

Solid matter from land washed annually into oceans is

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

  1. 330 million tonnes

  2. 3300 million tonnes

  3. 3.3 million tonnes

  4. 33 million tones

Show answer
Correct Option: B
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.'

Steel, tin and copper are being substituted in many industries by

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

  1. Plastics

  2. Ceramics

  3. High strength glass fibres

  4. All the above

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Correct Option: D

Which method of solid waste disposal is not being successful in India?

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

  1. Landfillings

  2. Compositing

  3. Sea Disposal

  4. Pulverization

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Correct Option: A

Which solid waste disposal method is simple and economical?

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

  1. Landfilling method

  2. Incineration method

  3. Compositing method

  4. Pyrolysis method

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Correct Option: A

Which solid waste method cannot be used commonly?

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

  1. Compositing

  2. Landfilling

  3. Pulverization

  4. Sea Disposal

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Correct Option: C

With passage of time, filled up solid wastes will get stabilized by

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

  1. Decomposition

  2. Eutrophication

  3. Hydrolysis

  4. Urbanization

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Correct Option: A

Among these metals given below, which is the most valuable recyclable component of a printed circuit board?

commercial studies waste generation and management e-waste management e-wastes waste generation

  1. Copper

  2. Silver

  3. Gold

  4. Manganese

Show answer
Correct Option: A
Explanation:
Printed Circuit boards (PCB), also known as green boards are designed specifically to support and facilitate the connection of electronic components. PCB can be recycled. PCBs can be shredded, dismantled, and processed so that valuable precious metals and other materials are separated from other low-value materials.the copper part of the board is totally recyclable as a metallic material. Recycling PCB help reduce depletion of natural resources i.e. copper.
Hence answer is 'Copper'