Tag: commercial studies

Questions Related to commercial studies

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

Show answer
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

Show answer
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

Show answer
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

Show answer
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.

The e-wastes:

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

  1. Represents municipal solids

  2. Is produced in developing countries and exported to developed countries

  3. Are burried in land fills or incinerated

  4. Does not involve recycling

Show answer
Correct Option: A

Incineration of Municipal waste involves

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

  1. Oxidation

  2. Deduction

  3. Redox action

  4. Disintegration

Show answer
Correct Option: A

Organic pollutants are discharged as a municipal sewage and

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

  1. Industrial effluents

  2. Mining Pollution

  3. Natural pollution

  4. Artificial Pollution

Show answer
Correct Option: A

Solid waste increases with an increase in

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

  1. Road Construction

  2. Educational Institutions

  3. Urbanization

  4. Farms

Show answer
Correct Option: C

General source of municipal waste are residential, commercial and

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

  1. Manure

  2. Kitchen Waste

  3. Open area waste

  4. Farms

Show answer
Correct Option: C

Finely divided solid, remaining either with in solution or in suspension is known as

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

  1. Settaleable Solids

  2. Dissolved Solids

  3. Suspended solids

  4. Colloidal Solids

Show answer
Correct Option: D