synthetic fiber

______ fiber is used in fishing net.

• rayon

• polyester

• nylon

• acrylic

______ is known as artificial silk.

• nylon

• rayon

• polyester

• melamine

____ is a natural polymer.

• cellulose

• glucose

• ester

• amide

Each repeating unit of a polymer is called a ______

• unit

• cellulose

• monomer

• none of these

______ is used to make swimwear.

• nylon

• rayon

• bakelite

• melamine

(a)   chain is seen in thermosetting plastic.

_____ is an example of thermoplastic.

• PVC

• polystyrene

• polyethylene

• all of these

Which of the following cannot be remoulded?

• PVC

• PET

• Melamine

• None of these

Which of the following are the properties of polyester?

• it resists wrinkle.

• it is easy washable

• it is not a moth repellent.

• it is very weak but durable.

____ plastic is used in non-stick frying pan.

• bakelite

• teflon

• melamine

• PET