Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Why is improper disposal of waste a curse to environment?

  1. Wastes pollute our environment

  2. Waste has very harmful effect on the living organisms

  3. Waste decreases the fertility of the soil

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Improper disposal of waste pollutes our environment (air, water and soil). Improper waste storage or disposal frequently contaminates surface ground water supplies. The radioactive waste causes harmful effect on the living organism. The non-biodegradable waste decreases the microbial flora of the soil.
So, the correct answer is option D.
Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which solid waste disposal mehod is cheaper and simpler?

  1. Pulverization

  2. Compositing

  3. Sanitary Landfilling

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

Sanitary landfilling is cheaper and simpler than incineration or specialized recycling. It involves compacting waste in lined pits and covering with soil daily, requiring minimal infrastructure compared to other methods.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which of the following are environmental friendly practices?

  1. Carrying cloth bags for shopping

  2. Switching off light and fans when not in use

  3. Using public transport

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

All listed practices, including using cloth bags, conserving electricity, and utilizing public transport, reduce resource consumption and environmental impact. They are all recognized as environmentally friendly.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which of the following statements is correct?   

  1. There are working 'EcoSan' toilets in many areas of Kerala and Sri-Lanka

  2. Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc. that are collected and disposed by the municipality

  3. In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
EcoSan toilet has emerged as a sustainable concept and is prevalent in Delhi, Kerala, and Mumbai for footpath and slum dwellers. These are solid wastes from home, offices, stores, schools, hospitals, hotels etc. These domestic solid wastes one usually, thrown in municipal garbage collecting cans. a depression or trench is made in the ground and wastes are dumped into it after compaction and covered with dirt every day. the above statements are correct.

So, the correct answer is 'All of these'.
Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which method is used if suitable dumping areas are not available?

  1. Incineration

  2. Compositing

  3. Pulverization

  4. Disposal into the Sea
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When land is scarce or dumping areas are unavailable, incineration is the preferred method because it significantly reduces the volume of waste. This makes it ideal for urban areas with limited space.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

The process of heating the waste at high temperature is called as ________.

  1. Land-filling

  2. Pyrolysis

  3. Decomposing

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

The scientific method of solid waste management where the waste is heated to high temperature. This process is beneficial for obtaining gas and electricity. The method is suitable for municipal solid waste management.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Solid matter from land washed annually into oceans is

  1. 330 million tonnes

  2. 3300 million tonnes

  3. 3.3 million tonnes

  4. 33 million tones
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Approximately 3300 million tonnes of solid matter from land is washed annually into oceans. Apart from the soil, glasses, metals and plastics are also washed into oceans. This matter spreads over the sea floor.

Thus, the correct answer is '3300 million tonnes.'

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Steel, tin and copper are being substituted in many industries by

  1. Plastics

  2. Ceramics

  3. High strength glass fibres

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

Modern materials science has led to the substitution of traditional metals like steel and copper with plastics, ceramics, and high-strength glass fibers in various industrial applications due to their specific properties.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which method of solid waste disposal is not being successful in India?

  1. Landfillings

  2. Compositing

  3. Sea Disposal

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

Landfilling is often unsuccessful in India due to the lack of properly engineered sanitary landfills, leading to open dumping, leachate issues, and environmental contamination. Other methods like composting have seen more localized success.

Multiple choice biology waste generation and management disposal of waste safe disposal of waste solid waste and its management

Which solid waste disposal method is simple and economical?

  1. Landfilling method

  2. Incineration method

  3. Compositing method

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

Landfilling is generally the most simple and economical method for solid waste disposal, especially when land is available. It requires minimal processing compared to incineration or pyrolysis.