Tag: biology

Questions Related to biology

Combustable garbage, rubbish and dead animals are:

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

  1. Dumped

  2. Burnt

  3. Landfill

  4. All of above

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Correct Option: B

Which solid waste disposal method is suitable to indian conditions?

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

  1. Landfillings

  2. Incineration

  3. Pulverization

  4. Composition

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Correct Option: D

Select the incorrect statement regarding polyblend.

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

  1. Recycled and modified form of plastic

  2. Used to lay road when mixed with bitumen

  3. Enhances the water absorbing capacity of bitumen

  4. Both A and B

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Correct Option: C
Explanation:

Polyblend is a fine powder of recycled modified plastic. The binding property of plastic makes the road last longer besides giving strength to withstand more loads when mixed with bitumen. Polyblend lowers moisture absorption capacity due to the coating of plastics at the surface.

So, the incorrect statement regarding polyblend is 'Enhances the water absorbing capacity of bitumen'.

Which is the best method to dispose off biological wastes from hospitals ?

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

  1. Incineration

  2. Landfill

  3. Recycling

  4. Composting

Show answer
Correct Option: A
Explanation:

The burning of a substance at high temperature to form ash is called incineration. It is used to destroy biological waste. All the organic matter present in the waste is removed as carbon dioxide and water vapour.

Which method of solid waste disposal is known as hygienic method?

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

  1. Incineration

  2. Landfilling

  3. Pulverization

  4. Composition

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Correct Option: D

Biological processes for the treatment of industrial wastes for the safe disposal, can be categorized into aerobic as well anaerobic process.

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

  1. True

  2. False

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Correct Option: A
Explanation:
Microorganisms already present in wastewater treatment feed on the complex substances in the wastewater, converting them into simpler substances, improving treatment. Biological wastewater treatment is the use of bacteria to degrade and decompose organic materials during treatment. The microbial community is the heart of any wastewater treatment facility. If the treatment system is having a problem, it’s critical to target and fix the root cause: A microbial community that isn’t performing well.
Due to their growth, adaptability, and resilience, wastewater treatment systems rely on microorganisms to degrade organic material and produce clear effluent water. By harnessing the ability of microorganisms to tackle the source of larger issues—degrading odor-causing compounds, for example—biological wastewater treatment offers major advantages over alternative treatment strategies:
Lower operating costs compared to alternatives. Efficient degradation and removal of organic and inorganic compounds. Improved flexibility to handle a wide range of wastewater characteristics and flows.
However, the key to any biological treatment system is ensuring that the existing microbial community has the right conditions to grow.

The total solid matter washed into the sea is approximately

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

  1. 300 million tonnes

  2. 1300 million tonnes

  3. 2300 million tonnes

  4. 3300 million tonnes

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Correct Option: A

Scrubbers were used 

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

  1. To make air free from microorganisms.

  2. To make air free from dust and gases.

  3. To make air free from solid particles.

  4. None of the above.

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Correct Option: B

What measures should be taken for waste disposal?

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

  1. Segregation of biodegradable and non-biodegradable wastes.

  2. Safe disposal of plastic bags.

  3. A compost pit for kitchen wastes.

  4. All of the above.

Show answer
Correct Option: D
Explanation:
Measures for disposal of wastes:
(a) Segregation of biodegradable and non-biodegradable wastes.
(b) Safe disposal of plastic bags.
(c) Vegetable/fruit peels can be placed near trees/plants, which on decomposition will enrich the soil with nutrients.
(d) Give paper wastes for recycling.
(e) Prepare a compost pit for kitchen wastes.

Use of sewage, domestic waste, farm yard manure, etc. will decrease the fertility of the degraded lands.

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

  1. True

  2. False

  3. Nither

  4. Either

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Correct Option: B