Tag: manmade materials

Questions Related to manmade materials

Acetaldehyde can be used for making synthetic:

chemistry manmade materials synthetic rubber rubber polymer

  1. protein

  2. perfumes

  3. rubbers

  4. sugar

Show answer
Correct Option: C
Explanation:

Acetaldehyde is primarily used as an intermediate in the manufacture of a range of chemicals, perfumes, aniline dyes, plastic and synthetic rubber, etc.

$\therefore$ Answer is option $B$ and $C$.

Which of the following is not a synthetic rubber?

chemistry manmade materials synthetic rubber rubber polymer

  1. Neoprene

  2. Buna-N rubber

  3. Buna-S rubber

  4. Polyethylene

Show answer
Correct Option: D

Plastic products are identified by the use of some special numbers. These numbers represent for

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

  1. Electrical conductivity of plastic product

  2. Thermal resistance of plastic product

  3. Durability of plastic product

  4. Recycling of plastic product

Show answer
Correct Option: D
Explanation:

These numbers are used to indicate whether the plastic can be recycled into new products or not.