0 votes
60 views
asked in material science by (215k points)
Consider the following statements in connection with thermoplastics:

(i)   They are long-chain molecules held together by van der Waals‟ forces.

(ii) They cannot be resoftened once they have set and hardened.                   

(iii) They are highly plastic and are easy for shaping.               

(iv) Some commercial thermoplastics are polyethylene, polystyrene and PVC.

Which of the above statements are correct?

(a) 1, 2 and 3 only          (b) 1, 3 and 4 only

(c) 2, 3 and 4 only          (d) 1, 2, 3 and 4

Please log in or register to answer this question.

Welcome to Q&A discussion forum, where you can ask questions and receive answers from other members of the community.

10.4k questions

274 answers

26 comments

15.2k users

...