Tag: environmental chemistry

Questions Related to environmental chemistry

Solvents used to dry clean clothes are usually $C 2Cl _4$ .A substitute has been discovered which is environmental friendly is an application 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

Show answer
Correct Option: B
Explanation:

Solvents used to clean dry clothes are usually chlorinated compounds such as tetrachloroethylene $C _2Cl _4$ which is a human potential carcinogen which have serious environmental consequence. a substitute has been discovered which is environmental friendly is an application of green chemistry.

Which of the following compounds are toxic?

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

  1. Benzene

  2. Toluene

  3. Carbon tetrachloride

  4. All of the above

Show answer
Correct Option: D
Explanation:

A toxic substance is a substance that can be poisonous or cause health effects.

Benzene is known to cause cancer, based on evidence from studies in both people and lab animals.Basically it is carcinogenic.
Toluene is irritating to the skin, eyes, and respiratory tract. It can cause systemic toxicity by ingestion or inhalation and is slowly absorbed through the skin.
Carbon tetrachloride is one of the most potent hepatotoxins (toxic to the liver), so much so that is widely used in scientific research to evaluate hepatoprotective agents.Exposure to high concentrations of carbon tetrachloride (including vapour) can affect the central nervous system, degenerate the liver and kidneys and prolonged exposure may lead to coma or death.

The short term variation which occurs in the atmosphere is called:

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

  1. climate

  2. relative humidity

  3. climate chart

  4. weather

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Correct Option: D
Explanation:

The short term variation in atmosphere is called weather.

________ reduces toxicity, minimizes waste, saves energy, and cuts down on the depletion of natural resources. It allows for advances in chemistry to occur in a much more environmentally benign way.

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

  1. Green chemistry

  2. Green revolution

  3. Waste management

  4. None of the above

Show answer
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. 

Faraday has developed a plating process to make high-performance chrome coatings from trivalent chromium instead of highly toxic hexavalent chromium. This is an application 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

Show answer
Correct Option: B
Explanation:

Faraday has developed a plating process to make high-performance chrome coatings from trivalent chromium instead of highly toxic hexavalent chromium. It involves the production of alternate product which is more friendly to environment. Hence, this is an application of Green chemistry.

The process of nutrient enrichment is termed as:

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

  1. Limiting nutrients

  2. Eutrophication

  3. Enrichment

  4. Schistosomiasis

Show answer
Correct Option: B
Explanation:
Eutrophication is a very slow process in which river, lake or another shallow water source deteriorate in the marsh and later on dies. Nutritive pollution is one of the important factor of eutrophication due to which aquatic plant and animal life of this water destroed. Or e can say that excessive richness of nutrients in a lake or other body of water, frequently due to run-off from the land, which causes a dense growth of plant lifeis known as eutrophication.

Green chemistry means such reactions which -

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

  1. are related to the depletion of ozone layer

  2. study the reactions in plants

  3. produce colour during reactions

  4. reduce the use and production of hazardous

    chemicals

Show answer
Correct Option: D
Explanation:

Green chemistry means chemistry that uses less harmful and hazardous chemicals products that does not cause any harm neither to us nor to the environment.

Which of the following method of separation is done with the help of bullocks?

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

  1. Threshing

  2. handpicking

  3. winnowing

  4. sieving

Show answer
Correct Option: A
Explanation:

Threshing is the process of loosening the edible part of grain (or other crop) from the husks and straw to which it is attached. It is the step in grain preparation after reaping and before winnowing, which separates the grain from the chaff.

Green chemistry involves ?

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

  1. production of chemicals of our daily use from green house gases

  2. such chemical processes in which green plants are used

  3. those reaction which are of biological origin

  4. use of non-toxic reagents and solvents to produce environment friendly products.

Show answer
Correct Option: D
Explanation:

Green chemistry is a design of products and process that reduces or eliminates the use of harmful hazardous products. It uses the concept of invention and design and invokes to produce products that are environment-friendly.

Soil is a natural medium for growth of land plants. Organic soil contains organic number upto a depth of

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

  1. Two and a half feet

  2. One foot

  3. Six inches

  4. Ten feet

Show answer
Correct Option: A
Explanation:

Organic soil contain organic number upto a depth of two and half feet, this is also known as human or upper layer of soil.