Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice solid waste management environmental management biology

In which method all pathogens and insects are destroyed?

  1. Incineration

  2. Landfilling

  3. Pyrolysis

  4. Composition
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Incineration involves burning waste at very high temperatures, which effectively destroys pathogens, bacteria, and insects that might be present in the waste.

Multiple choice solid waste management environmental management biology

Dust, smoke, fly ash and fume are

  1. Solid particulate

  2. liquid particulate

  3. Gas particulates

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

Dust, smoke, fly ash, and fumes are all examples of solid particulate matter suspended in the air.

Multiple choice solid waste management environmental management biology

Composting is done by using 

  1. Food waste

  2. Kitchen waste

  3. Waste from kitchen

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

In composting organic material, food wastes, kitchen waste, waste from kitchen etc are segregated from the household waste. These are then allowed to decompose and produce compost. 

Multiple choice solid waste management environmental management biology

Compost manure is produced from

  1. Farmyard manure and green manure

  2. Farm refuse and household refuse

  3. Organic remains of biogas plants

  4. Rotted vegetables and animal refuse
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Compost  is organic matter that has been decomposed and recycled as a fertilizer and soil amendment. Compost is a key ingredient in organic farming. At the simplest level, the process of composting simply requires making a heap of wetted organic matter known as green waste (leaves, food waste) and waiting for the materials to break down into humus after a period of weeks or months. Modern, methodical composting is a multi-step, closely monitored process with measured inputs of water, air, and carbon- and nitrogen-rich materials. The decomposition process is aided by shredding the plant matter, adding water and ensuring proper aeration by regularly turning the mixture. Worms and fungi further break up the material. Compost is rich in nutrients. It is used in gardens, landscaping, horticulture, and agriculture. The compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, addition of vital humus or humic acids, and as a natural pesticide for soil. In ecosystems, compost is useful for erosion control, land and stream reclamation, wetland construction, and as landfill cover.

Therefore, the correct answer is option D.

Multiple choice solid waste management environmental management biology

Dried leaves and husk should be

  1. Burnt

  2. Recycled

  3. Converted into useful compost

  4. Thrown away
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Dried leaves and husk cannot be burnt because burning of this kind of waste produced smoke which pollute the environment and harmful to living beings. So it can be converted into humus or compost by the anaerobic process. Thus, the correct option is C.
Multiple choice solid waste management environmental management biology

Mark the incorrect statement related to solid wastes.

  1. It refers to a variety of discarded materials, including liquid or gas.

  2. With the migration of people to urban settings, the volume of solid waste in concentrated areas greatly increased.

  3. Paper is considered as one of the major solid waste.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
 Solid waste refers to garbage or trash or discarded material. With increase in population in the urban cities, the volume at which trash gets generated has increased by many folds. While paper in itself is bio degradable; the processing of paper and recycling of paper waste produces sludge that adds on to solid waste however it does not include liquid or gaseous waste.
So, the correct answer is 'It refers to a variety of discarded materials, including liquid or gas'
Multiple choice solid waste management environmental management biology

Process in which preparation of manure is done from kitchen and food waste with the help of earthworm and other organism 

  1. Composting

  2. Incineration

  3. Vermiculture

  4. All
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vermiculture is another way of preparation of manure from kitchen and food wastes. In this process worms and other similar organism are added to the waste which help in making compost. 

Multiple choice solid waste management environmental management biology

Industrial waste management includes wastes at which of the following stages?

  1. Raw materials

  2. Processing

  3. Final products

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

The term usually relates to all kinds of waste, whether generated during the extraction of raw materials, the processing of raw materials into intermediate and final products, the consumption of final products, or other human activities, including municipal (residential, institutional, commercial), agricultural, and special (health care, household hazardous wastes, sewage sludge). Waste management is intended to reduce adverse effects of waste on health, the environment or aesthetics.