MEDIUM
8th CBSE
IMPORTANT
Earn 100
PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Can you write the major difference between these two types of plastics?
Important Questions on Synthetic Fibres and Plastics
EASY
8th CBSE
IMPORTANT
A polymer is a chain of many small units joined together which are called _____.
EASY
8th CBSE
IMPORTANT
The synthetic fibres are also known as _____ fibres. (Natural/ Man-made)
EASY
8th CBSE
IMPORTANT
The first fully synthetic fibre was _____.
EASY
8th CBSE
IMPORTANT
A fibre similar to wool is _____.
MEDIUM
8th CBSE
IMPORTANT
A plastic used for making crockery is _____. (Melamine / Bakelite)
HARD
8th CBSE
IMPORTANT
Match items in List A with the items of list B.
| List A | List B |
| (a) nylon | (i) non-stick coating |
| (b) PET | (ii) electric switches |
| (c) rayon | (iii) parachutes |
| (d) thermosetting plastics | (iv) polyester |
| (e) Teflon | (v) artificial silk |
EASY
8th CBSE
IMPORTANT
Unscramble the jumbled words given below, related to synthetic materials.
anory
EASY
8th CBSE
IMPORTANT
Unscramble the jumbled word given below, related to synthetic materials.
Lopmery
