Question

Q.2 Fill in the blanks:
a)
Plastics do not soften on heating and cannot be reshaped.
b) The best way to dispose the discarded plastic is
c) The Plastic which is used as a substitute for glass is
is known as Thermocol.
Q.3 Answer the following questions:
a) How many types of Plastics are there?
b) Name three types of synthetic fibres.​

Answer 1

Try to find it

a. Plastic shows plasticity property, hence it can be molded to any shape.

b. Motor cars are coated with Automotive paint.

c. Thermocoal melts at more than 100∘C.

d. Alkali silicate glass dissolves in water.

1. To summarize, there are 7 types of plastic exist in our current modern days:

1 – Polyethylene Terephthalate (PET or PETE or Polyester) ...

2 – High-Density Polyethylene (HDPE) ...

3 – Polyvinyl Chloride (PVC) ...

4 – Low-Density Polyethylene (LDPE) ...

5 – Polypropylene (PP) ...

6 – Polystyrene (PS) ...

7 – Other.

Rayon.

Acrylic.

Nylon.

Polyester.

Answer 2

Answer:

Ques 3-:

a) There are 7types of plastic

b) acrylic

nylon

polyester