Tag: pollution, sources, effects and preventive measures

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Questions Related to pollution, sources, effects and preventive measures

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

Where does municipal waste come from?

  1. Hospitals and medical facilities.

  2. Businesses and offices.

  3. Households and local councils.

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

Municipal waste consists of everyday items we use and then throw away, such as product packaging, grass clippings, furniture, clothing, bottles, food scraps, newspapers, appliances, paint, and batteries. These wastes  comes  from our homes, schools, hospitals, and businesses.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

All of the following statements about hazardous waste containers are true, except for the following:

  1. Containers must be closed except when removing or adding waste.

  2. Containers must be clean on the outside.

  3. Contents must be compatible with the type of waste containers.

  4. Any type of container, including food containers, can be used to contain hazardous waste.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Any type of containers, including food containers, cannot be used to contain any hazardous wastes.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

What percent of the moisture content is beneficial for biological breakdown of the waste?

  1. 40%

  2. 45%

  3. 50%

  4. 55%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The moisture content of the waste is considered as a single critical parameter for evaluating the efficiency of the bio-drying process. The moisture content influences microbial activity and biodegradation of the organic component during the bio-drying process. Despite the fact this technology is considered as a zero leachate approach, it is likely that a limited amount of free water may seep through the waste matrix and collected at the bottom of the bioreactor as leachate. Bio-drying has mostly been studied for MSW (municipal solid waste pulp and paper and, garbage residues and sewage sludge with 50–70% as the optimal initial moisture content range for the bio-drying process.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

The method by which the waste is packed and dumped at the site and is covered with earth is called __________.

  1. segregation

  2. sanitary landfill

  3. composting

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

Sanitary landfill is a process of isolating the waste from the environment. The solid waste is buried in the land with proper regard that it does not dissipate in the groundwater for which synthetic sheet is used below. Then it is systematically dumped and covered by earth to prevent its effects on topsoil.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

Precipitation of water with dissolved acids reach the ground, Such rainfall is called _______________.

  1. Acid Rain

  2. Convectional rainfall

  3. Cyclonic rainfall

  4. All of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Because of air pollution in industrial areas, various gases get mixed in the air. Different acids are created when the water vapour in the air reacts chemically with these gases. Precipitation of water with dissolved acids reach the ground. Such rainfall is called 'acid rain'.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

Which of the following are the major benefits of composting?

  1. It enhances soil nutrients and water retention capacity of soils

  2. It suppresses plant disease

  3. It rejuvenates poor soil by adding humus

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

Composting is the natural way of recycling which involves bio-degradation of organic waste and turning it into organic fertilizer. In this process, various microorganisms including bacteria and fungi break down the organic matter into simpler substances. It enhances the soil nutrients and water retention capacity of soil by moderating soil temperature and maintains the pH of the soil. It suppresses plant disease by providing them adequate nutrients to absorb and make the soil fertile.

Multiple choice waste management - need for management of waste sanitation and solid waste management pollution, sources, effects and preventive measures man and environment geography treatment and disposal of waste waste generation and management - methods of safe disposal of waste

A mechanical means of treating industrial effluents is called _______.

  1. Sedimentation

  2. Rainwater harvesting

  3. Recycling of waste water

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Treatment of industrial effluents can be done in three phases.

  • (a) Primary treatment by mechanical means. This involves screening, grinding, flocculation, and sedimentation. 
  • (b) Secondary treatment by biological process. 
  • (c) Tertiary treatment by biological, chemical and physical processes. This involves recycling of wastewater.