Tag: environmental impact: plastics

Questions Related to environmental impact: plastics

State whether true or false :

Bakelite is the first synthetic thermosetting plastics.

  1. True

  2. False


Correct Option: A
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

When plastics are burnt toxic substances are released into the air causing water pollution.

  1. True

  2. False


Correct Option: B
Explanation:

When plastics are burnt toxic substances are released into the air causing air pollution. Hence, the given statement is false.


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

  1. True

  2. False


Correct Option: A
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

Plastics are eco-friendly.

  1. True

  2. False


Correct Option: B
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

Which of the following is non-biodegradable?

  1. Plastic

  2. Cotton

  3. Paper

  4. Left-over food


Correct Option: A
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.