Environmental Studies · General Awareness

Sustainability and Recycling

2,607 Questions

Sustainability and recycling practices focus on minimizing environmental impact through resource conservation. Topics include life cycle assessment, eco-friendly manufacturing, and the conversion of discarded items into new goods. These themes are common in environmental studies papers for various government exams.

Recycling of materialsEco-friendly textilesSustainable manufacturingWaste reduction strategiesLife cycle assessmentGreen packaging innovations

Sustainability and Recycling Questions

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

Which of them are Non-biodegradable waste?

  1. Synthetic fibers

  2. Pen refills

  3. Silver foil

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

The waste materials which cannot be broken down into non-poisonous or harmless substances in nature are called non-biodegradable waste.
Examples are plastics, polythene bags, ball-point pen refills, synthetic fibres, and glass objects, metal articles like aluminium cans, iron nails, silver foil and radioactive wastes.

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

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

  1. Green revolution

  2. Waste management

  3. Revolution resource recovery

  4. Green chemistry
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Plastic used to preserve yogurts is replaced with a polymer called polylactic acid is an example of _______.

  1. green chemistry

  2. waste management

  3. green revolution

  4. none of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Since usage of petroleum-based plastic is harmful to the environment, a polymer called polylactic acid, made using micro-organisms to convert cornstarch into a resin, is used to preserve yogurt. The resulting polymer is used to replace rigid petroleum-based plastic used in yogurt containers and water bottles and is environment-friendly. It is an application of green chemistry

Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green 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 _________.

  1. Green revolution

  2. Green chemistry

  3. Waste management

  4. Revolution resource recovery
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Which of the following practices will not come under green chemistry?

  1. If possible, making use of soap made of vegetable oils instead of using synthetic detergents.
  2. Using $H _{2}O _{2}$ for bleaching purpose instead of using chlorine based bleaching agents.

  3. Using bicycle for travelling small distances instead of using petrol/diesel based vehicles.

  4. Using plastic cans for neatly storing substances.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Green chemistry is the different process and methods that helps in minimizing the effects of pollution and eliminating the hazardous substances. It takes care that no products adds to the environmental pollution. So using plastic cans does not come under green chemistry. 

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

Which of the following materials are non-biodegradable?

  1. Plastic mugs

  2. Egg shell

  3. Leather belt

  4. Both A and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Egg shell and leather belt are obtained naturally from living organisms and are made of biodegradable components.

Plastic mugs are synthesized by humans in factors by making artificial polymers using chemicals which ultimately becomes non biodegradable. It remains as it is for thousands of years in the same condition.
Thus, the correct answer is 'Plastic mugs.'

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

Which is matched for composite waste?

  1. Waste clothing, waste plastics such as toys

  2. Waste clothing, rocks

  3. Toys, green waste

  4. Toys, bottles, paper
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Composite waste is a heterogeneous mix of trash composed of different types of materials. Composite waste includes waste clothing, Tetra Packs, waste plastics such as toys.

So the correct option is 'Waste clothing, waste plastics such as toys.'

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Which of the following is non biodegradable?

  1. Plastic

  2. Cotton

  3. Paper

  4. Left over food stuff
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodegradation is the disintegration of materials by bacterial, fungi or other biological means.

Most plastics are derived from propylene, a simple chemical component of petroleum. When heated up in the presence of a catalyst, individual chemical units monomers of propylene link together by forming extremely strong carbon-carbon bonds with each other. This results in polymers long chains of monomers called polypropylene.
While cotton, paper and left over food stuff are decomposable by bacterial action so Option A is correct.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Which of the following statement is true about non-biodegradable materials?

  1. They are safe for environment

  2. The wastes are made up of synthetic material

  3. They can be constantly reused

  4. The wastes are made up of natural ingredients
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Non-biodegradable materials are those which do not decompose by natural processes. Non-biodegradable materials are generally synthetic polymers. They are not safe for the environment. Natural fibres degrade very easily in nature. However, non-biodegradable materials are made up of synthetic materials which are not broken down by micro-organisms.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Which of the following item cannot be recycled?

  1. Plastic milk bottles

  2. Plastic food trays

  3. CD/DVD cases

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

Plastic containers are relatively dense and compact which enables them to be easily sorted mechanically, into the different types of plastics. Plastic film and bags are not easily mechanically sorted making them very costly to sort. Also, recycling such plastic is an expensive process.

CVD/DVD cases are made up of thermosetting polymers which can not be recycled.
Option C is correct.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

 Disposable plastic plates should not be used because:

  1. They are made of materials with light weight

  2. They are made of toxic materials

  3. They are made of biodegradable materials

  4. They are made of non-biodegradable materials
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Disposable plastic plates should not be used because its waste is non-biodegradable and cannot 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.

Hence, the correct option is $D$

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Environmental pollution by plastics can be minimized by practising the 4R principle of:

  1. REDUCE, REUSE, RECYCLE

  2. REDUCE, REUSE, RECYCLE and RECOVER

  3. REDUCE, REUSE, REWORK and RECYCLE

  4. REDUCE, REGENERATE, REWORK and RECYCLE
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The 4R principle is Reduce, Reuse, Recycle and Recover. This principle is environment friendly and would help reduce environmental pollution to an extent.


The principle directs people to


•reduce the usage of resources. Use them only if necessary.


•reuse the resources (or materials) if possible. For example, reusing cloth bags for shopping.


•recycle materials if they are no longer usable.


•recover materials; converting waste into usable resources.

Hence, the correct option is $\text{B}$
Multiple choice chemistry synthetic fibres and plastics plastic and environment pollution due to plastics environmental impact: plastics

Which of the following are examples of recycling by industry? 

  1. The use of scrap metal in manufacture of steel

  2. The use of waste paper

  3. The recovery of energy from burning combustible waste

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

Recycling is a practice that refers to the collection and reuse of waste materials. The materials from which the items are made can be reprocessed into new products.
All the above are examples of Recycling.

Multiple choice solid waste management environmental management biology

What does 4R's principle mean ?

  1. Reduce, Reuse, Recycle and Recover

  2. Reduce, Remove, Recycle and Reduce

  3. Reuse, Remove, Recover and Reduce

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

4R's principle means that use of non-environmental friendly substance should be reduced. They should be Reuse, Recycled and Recovered.