Tag: e-wastes

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Questions Related to e-wastes

Multiple choice social science waste generation and management origin of waste products e-wastes waste generation waste and its types

Waste is said to be

  1. Subjective

  2. Destructive

  3. Objectively inaccurate

  4. Both A and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The term waste is often subjective (because waste to one person is not necessarily waste to another) and sometimes objectively inaccurate (for example, to send scrap metals to a landfill is to inaccurately classify them as waste, because they are recyclable). 

Multiple choice social science waste generation and management origin of waste products e-wastes waste generation waste and its types

Proper management of natural resources ensures 

  1. equitable distribution of natural resources

  2. sustainable development

  3. Both A and B

  4. contamination of environment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Natural resource management refers to the management of natural resources such as land, water, soil, plants, and animals, with a particular focus on how management affects the quality of life for both present and future generations (stewardship)
  • Hence proper management of natural resources ensures equitable distribution of natural resources and sustainable development.
  • So, the correct answer is 'Both A and B'.
Multiple choice social science waste generation and management origin of waste products e-wastes waste generation waste and its types

Waste are of two types, biodegradable and non-biodegradable.

  1. True

  2. False

  3. Either

  4. Neither
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to natural disposal, the pollutants may be biodegradable or nonbiodegradable.

1. Biodegradable Pollutants: These are quickly degraded by natural means. Sewage and heat are pollutants of this category. These pollutants are disposed of by microbial action and radiation respectively.

2. Nondegradable Pollutants: These are not degraded or are degraded slowly in nature. DDT, arsenic salts of heavy metals, glass or tin containers, radioactive materials, and plastics are the pollutants of this category. These pollutants accumulate and may get biologically magnified as they pass through the food chains.

So, the correct answer is 'True'.

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

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

  1. Copper

  2. Silver

  3. Gold

  4. Manganese
Reveal answer Fill a bubble to check yourself
A Correct answer
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'