Question

Which of the following statements are true? ​

1. Plastics do not corrode easily. ​

2. Plastic objects are not economical as compared to ones made of metal. ​

3. Plastics can be repeatedly remoulded.

4. Plastics act as thermal insulators upon heating.

• A. 1 and 4​
• B. 1, 2, and 4​
• C. 1 and 2​
• D. 1 and 3

Answer 1

The correct option is A 1 and 4​

• Plastic is non-corrosive because they do not react nor do they undergochemical reaction with the material contained in it.
• Plastic resins are cheaper in comparison to metals.
• The plastics that can be remoulded on heating are called thermoplastics and those which cannot be remoulded are called thermosets.
• Plastics are poor heat conductors.