Tag: environmental impact: plastics

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Questions Related to environmental impact: plastics

Multiple choice chemistry synthetic fibres and plastics environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

State whether true or false :

Bakelite is the first synthetic thermosetting plastics.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bakelite is prepared in laboratories by controlling the pressure and temperature applied to phenol and formaldehyde. 


Baekeland produced a hard moldable material which he named "Bakelite". 

It was the first synthetic thermosetting plastic ever produced.

Therefore, option A is correct

Multiple choice chemistry synthetic fibres and plastics environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Substances which cannot be decomposed by micro-organisms are called non-biodegradable substances.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodegradable substances are such materials which are and can be degraded by natural factors like microbes (e.g. bacteria, fungi and few more), abiotic elements like temperature, UV, oxygen, etc.
Unlike biodegradable, non-biodegradable substances like plastics, cannot be easily handled and cannot be decomposed or dissolved by natural agents.
Option A is correct

Multiple choice chemistry synthetic fibres and plastics environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Plastics are eco-friendly.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plastics are human-made polymers and are non-biodegradable which means they cannot be easily handled and cannot be decomposed or dissolved by natural agents like microbes (e.g. bacteria, fungi), abiotic elements like temperature, UV, oxygen, etc. Thus are not eco-friendly.
Option B is correct

Multiple choice zoology garbage in, garbage out plastic waste environmental impact: plastics plastic

Which of the following is non-biodegradable?

  1. Plastic

  2. Cotton

  3. Paper

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

The plastics are the non-biodegradable wastes because they are synthetic polymers which cannot be acted upon by the microbes. They cannot be degraded by the decomposition activity of the bacteria and fungi. The cotton, paper and leftover food are degradable. 

Thus, the correct answer is option A.