The only natural thermoplastic resin, which is a product of animal life is ____________________?
(A) Rosin
(B) Shellac
(C) Amber
(D) Copal
Share this... |
![]() Facebook
|
![]() Twitter
|
![]() Linkedin
|
![]() Whatsapp
|
Your email address will not be published. Required fields are marked *