Tag: environmental impact: plastics

Questions Related to environmental impact: plastics

To which of the following 4R principle apply most?

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

  1. Synthetic fibre

  2. Natural fibre

  3. Plastic

  4. Metals

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Correct Option: C
Explanation:
4R principle was develped for solid waste management and stands for:
Reduce-the use of non-biodegradable materials,
Reuse-materials again and again,
Recycle-use the materials that can be recycled, and
Recovery-of lacking substances
It is mostly applicable to plastics because they are widely used in day-to-day life and are non-biodegradable possesing threat to the ecology.
Option C is correct.

Which of the following is non biodegradable?

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

  1. Plastic

  2. Cotton

  3. Paper

  4. Left over food stuff

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Correct Option: A
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.

Which of the following products can't be decomposed easily?

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

  1. Acrylic

  2. Polyethene

  3. Plastic

  4. All of the above

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Correct Option: D
Explanation:

These substances are non-biodegradable which cannot be decomposed by microorganisms. These products do not break down naturally. When we dispose of them in a garbage pile, the air, moisture, climate, or soil cannot break them down naturally to be dissolved with the surrounding land. They are not biodegradable. However natural waste and products made from nature break down easily when they are disposed of as waste.


Hence, the correct option is $\text{D}$

Which of the following material take the longest to degenerate ?

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

  1. Paper

  2. Cotton cloth

  3. Tin can

  4. Plastic bags

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Correct Option: D
Explanation:

Plastic bags, because they are complex polymer of long chain hydrocarbons.It is non biodegradable. Plastic bags do not break down naturally. When we dispose them in a garbage pile, the air, moisture, climate, or soil cannot break them down naturally to be dissolved with the surrounding land. However natural waste and products made from nature break down easily when they are disposed as waste.

Substances which cannot be decomposed by micro organisms are called :

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

  1. Biodegradable substances

  2. Non biodegradable substances

  3. Convertable subtances

  4. Non -convertable

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Correct Option: B

Which material is responsible for the cause of animal death?

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

  1. Plastic

  2. Sand

  3. Plants

  4. None of the above

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Correct Option: A
Explanation:

Most of the wandering animals eat plastic bags which take thousand of year to decompose and remain in the body of animals and become cause of death.

Which of the following materials is responsible for the cause of animal death?

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

  1. Paper

  2. Plastic

  3. Chemicals

  4. None of the above

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Correct Option: B
Explanation:
Since plastics take several years to decompose, they are not environment friendly and cause pollution. When animals eat them, plastics remain stuck in their organs and cause severe damage, sometimes leading to death.

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

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

  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

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Correct Option: B
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.

Which of the following item cannot be recycled?

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

  1. Plastic milk bottles

  2. Plastic food trays

  3. CD/DVD cases

  4. Plastic cups

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Correct Option: C
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.

Examples of non-biodegradable is/are :

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

  1. Tyre

  2. Plastic

  3. Electronic components

  4. All of these

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Correct Option: D
Explanation:

Non biodegradable waste is waste that does not break down into natural components and exists in the environment for a long time. Examples would be tyres, plastics, electronic components, metals etc