Tag: man made materials

Quizzes (8) Questions (131)

Questions Related to man made materials

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

What is recycling?

  1. Burning of material

  2. Break down the material by natural process

  3. Recovering and reprocessing the material into useful products

  4. Burying the products in land
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plastic recycling is the process of recovering scrap or waste plastic and reprocessing the material into useful products, sometimes completely different in form from their original state.

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

What are biodegradable compounds?

  1. Compounds which can not be decomposed

  2. Compounds which can be decomposed by man-made processes

  3. Compounds which can be decomposed by natural processes

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

Biodegradable compounds are compounds which get disposed through natural processes, such as action of bacteria. e.g peels of fruits, vegetables, paper.

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

To which of the following 4R principle apply most?

  1. Synthetic fibre

  2. Natural fibre

  3. Plastic

  4. Metals
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
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 products can't be decomposed easily?

  1. Acrylic

  2. Polyethene

  3. Plastic

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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 $\text{D}$

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

Which of the following material take the longest to degenerate ?

  1. Paper

  2. Cotton cloth

  3. Tin can

  4. Plastic bags
Reveal answer Fill a bubble to check yourself
D Correct answer
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.