Tag: strategies to control environmental pollution and green chemistry

Questions Related to strategies to control environmental pollution and green chemistry

Sludge is:

economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

  1. created from combination of gases released from industries and water

  2. a semi-solid slurry and can be produced as sewage sludge from wastewater treatment processes

  3. a type of household waste

  4. a type of industrial waste

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Correct Option: B
Explanation:

Sludge is a semi-solid slurry and can be produced as sewage sludge from wastewater treatment processes or as a settled suspension obtained from conventional drinking water treatment and numerous other industrial processes.

Which of the following statements is/are correct for generating non-biodegradable waste?

economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

  1. Thermal power plants producing fly ash

  2. Iron and steel plants producing blast furnace slag

  3. Metal industries producing mud and tailings

  4. All of the above

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Correct Option: D
Explanation:

Non-biodegradable waste is a type of waste that can not be broken down into its base compounds by micro-organisms, air, moisture or soil in a reasonable amount of time. Non-biodegradable waste is an environmental concern, as it threatens to overwhelm landfills and create disposal problems. Almost all industries generate some amount of non biodegradable waste for eg fly ash,slag,mud which are major concern for the environment.

Paint is type of:

economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

  1. industrial waste

  2. household waste

  3. from kitchen

  4. a contamination of water

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Correct Option: A
Explanation:

Paint is created in factories and non-bio-degradable waste. It is an industrial waste.

Switching from air to pure oxygen eliminates the NO production. This is an application of:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Green chemistry

  2. waste management

  3. Green revolution

  4. none of above

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Correct Option: A
Explanation:

Switching from air to pure oxygen eliminates NO production and also saves fuels by more efficient burning, thus, having less wastage. Hence, this is an application of Green chemistry.

Whenever practicable, synthetic methods should be designed to use and generate substances that are little or not toxic to human health and environment, is an objective of:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. waste management

  2. green chemistry

  3. air pollution

  4. green revolution

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Correct Option: B
Explanation:

Green chemistry also called sustainable chemistry, is an area of chemistry and chemical engineering, focused on the designing of products and processes that minimize the use of generation of hazardous substances.

Current commercial method for producing ibuprofen is a stunning application of Green chemistry because ______ .

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. ibuprofen is an anti-inflammatory drug and has various applications

  2. the previous method required large amounts of solvents and generated large wastes compared to the current method

  3. it has very important medicinal value

  4. this compound has very less side effects after usage

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Correct Option: B
Explanation:

The current commercial method for producing ibuprofen is a stunning application of green chemistry. Conventional methods of ibuprofen production requires six steps, hence, used large amounts of solvents and generated large amount of wastes. Current methods of ibuprofen production has just three steps and minimal waste, and is an application of Green chemistry.

To manufacture computer chips, many chemicals, large amounts of water, and energy are required which is harmful to environment. a process is discovered which significantly reduces the quantities of chemicals, energy, and water needed to produce chips. This is an application of:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Green chemistry

  2. waste management

  3. revolution resource recovery

  4. Green revolution

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Correct Option: A
Explanation:
Green chemistry seeks to develop products and processes that are kind to the environment. This can involve reducing the waste a process creates, using renewable materials, lessening the energy required to form a product, etc.

A raw material feedstock should be renewable rather than depleting, whenever technically and ecomonically practical, is an objective of:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Green revolution

  2. Green chemistry

  3. waste management

  4. revolution resource recovery

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Correct Option: B
Explanation:

Green chemistry seeks to develop products and processes that are kind to the environment. This can involve reducing the waste a process creates, using renewable materials, lessening the energy required to form a product, etc.
The given process is promoting renewable use of raw materials, hence, it is an objective of Green chemistry.

Plastics being developed from eco-friendly renewable sources, plus some modern plastics are biodegradable is one of the achievements of________.

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Green revolution

  2. Waste management

  3. Revolution resource recovery

  4. Green chemistry

Show answer
Correct Option: D
Explanation:

Green chemistry seeks to develop products and processes that are kind to the environment.
Plastics being developed from eco-friendly renewable sources, plus some modern plastics are biodegradable. The combination of innovations reduces our dependence on petroleum products, protects humans and wildlife from undesirable chemicals in old plastics, and reduces waste and impact on the environment.

Which of the following is not an objective of Green chemistry?

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. It is better to prevent waste than to treat or clean up waste after it has been created.

  2. The use of auxiliary substances (e.g., solvents, separation agents, etc.) should be made unnecessary wherever possible and innocuous when used.

  3. Energy requirements of chemical processes should be recognized for their environmental and economic impacts and should be minimized. If possible, synthetic methods should be conducted at ambient temperature and pressure.

  4. None of the above

Show answer
Correct Option: D
Explanation:

All the three are objectives of Green chemistry.
1. Waste Prevention:   
It is better to prevent waste than to treat or clean up waste after it has been created.
2. Safer Solvents and Auxiliaries:    
The use of auxiliary substances (e.g., solvents, separation agents, etc.) should be made unnecessary wherever possible and innocuous when used.
3. Design for Energy Efficiency:    
Energy requirements of chemical processes should be recognized for their environmental and economic impacts and should be minimized. If possible, synthetic methods should be conducted at ambient temperature and pressure.