Tag: waste generation

Questions Related to waste generation

______ is the most dangerous soil contaminant.

biology wastewater story origin of waste products waste generation waste and its types

  1. Organic waste

  2. Radioactive waste

  3. Chemical fertilizer

  4. Both A and B

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Correct Option: B
Explanation:

Radioactive substances resulting from explosions of nuclear testing laboratories and industries giving rise to nuclear dust radioactive wastes, penetrate the soil and accumulate giving rise to land/soil pollution.

Wastewater released from home, industries, hospitals is called as

biology wastewater story origin of waste products waste generation waste and its types

  1. Sludge

  2. Potable water

  3. Freshwater

  4. Sewage

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Correct Option: D

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

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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'

About how much in used or unwanted electronic items accumulates every year nationwide?

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

  1. $10,000$ tons

  2. $100,000$ tons

  3. $1$ million tons

  4. $2$ million tons

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Correct Option: D

Mark the correct statement about biomedical wastes.

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

  1. Hospitals wastes may include wastes like sharps, soiled waste, disposables, anatomical waste.

  2. It has been roughly estimated that of the $4 kg$ of waste generated in a hospital at least $1 kg$ would be infected.

  3. Biomedical wastes are in the form of disposable syringes, swabs, bandages, body fluids, human excreta, etc.

  4. All of the above.

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Correct Option: D

How are electronic items dangerous?

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

  1. They degrade over time, releasing cancer-causing chemicals into the air.

  2. Lead and mercury in components can cause metabolic changes in users.

  3. They lead toxic metals in landfills and into ground water.

  4. They create electromagnetic fields that interfere with animal reproduction.

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Correct Option: C

Which country produces the most e-waste per year?

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

  1. Britain

  2. China

  3. India

  4. USA

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Correct Option: B
Explanation:
China produces the largest amount of e-waste per year. When computers, televisions, music systems and other electronic products reach the ends of their lives, they often end up in China or other developing countries as e-waste. Such waste is a serious environmental threat in these parts of the world because of the poorly regulated conditions under which the waste is dismantled.

What is the average life span of a computer?

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

  1. $10$ years

  2. $5$ years

  3. $2.5$ years

  4. $1$ year

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Correct Option: C

Which toxic compound is not found in e-waste?

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

  1. Mercury

  2. Cadmium

  3. Neon

  4. Lead

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Correct Option: C
Explanation:

Substances found in large quantities include epoxy resins, fiberglass, PCBs, PVC (poly vinyl chlorides), thermosetting plastics, lead, tin, copper, silicon, beryllium, carbon, iron and aluminium. Elements found in small amounts include cadmium, mercury and thallium. Elements found in trace amounts include americium, antimony, arsenic, barium, bismuth, boron, cobalt, europium, gallium, germanium, gold, indium, lithium, manganese, nickel, niobium, palladium, platinum, rhodium, ruthenium, selenium, silver, tantalum, terbium, thorium, titanium, vanadium, and yttrium. Almost all electronics contain lead and tin (as solder) and copper (as wire and printed circuit board tracks), through the use of lead-free solder is now spreading rapidly. 

Waste from hospitals are known as 

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

  1. Industrial waste

  2. Biomedical waste

  3. Biomagnification

  4. Eutrophication

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Correct Option: B
Explanation:

Any waste which is generated during the diagnosis, treatment or immunization of human beings or animals or in research activities pertaining thereto or in the production or testing of biologicals is called biomedical wastes.