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Worksheets

POLYMERS AND COMPOSITES - II

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Bulk polymerization is used to prepare -------------------------

a)

Nylon 6,6

b)

PVC

c)

Polythene

d)

Polycarbonate

2.

Which among the following is a synthetic polymer?

a)

proteins

b)

polysaccharides

c)

natural rubber

d)

Nylon 6,6

3.

Which of the following contains isoprene units?

a)

Polythene

b)

Natural rubber

c)

Nylon 6,6

d)

PVC

4.

----------------------- technique is exclusively used to produce polymers from water insoluble monomer.

a)

Bulk polymerization

b)

Solution polymerization

c)

Suspension polymerization

d)

Emulsion polymerization

5.

------------ is a binder or polymer material which holds the different constituents together.

a)

Plasticizer

b)

Resin

c)

Pigments

d)

Fillers

6.

------------------ are additives which are added to resins to increase their plasticity and flexibility.

a)

Resins

b)

Fillers

c)

Pigments

d)

Plasticizers

7.

Why fillers are used in polymer fabrication process?

a)

To impart colour

b)

To provide flexibility

c)

To reduce making cost

d)

To provide long life to polymer

8.

------------- are added mainly to thermosetting resins to accelerate the polymerisation

a)

Fillers

b)

Pigments

c)

Catalysts

d)

Plasticizers

9.

----------------- are added to make the moulding of plastic easier and to impart flawless, glossy finish to the products.

a)

Plasticizers

b)

Lubricants

c)

Fillers

d)

Pigments

10.

--------- added to increase the thermal stability during processing.

a)

Stabilizers

b)

Fillers

c)

Catalysts

d)

Pigments

11.

----------------------are added to impart desired colour to plastics.

a)

Plastizicers

b)

Pigments

c)

Fillers

d)

Lubricants

12.

----------- are added to protect the plastics against oxidative degradation so as to preserve its quality.

a)

Fillers

b)

Pigments

c)

Anti-oxidants

d)

Plasticizers

13.

-------------- method is applicable mainly to the thermoplastic resins.

a)

Compression moulding

b)

Injection moulding

c)

Blow moulding

d)

Extrusion moulding

14.

------- moulding is used to fabricate hollow bottles.

a)

Injection

b)

Compression

c)

Blow

d)

Extrusion

15.

--------------------- materials are used in compression moulding

a)

Thermosetting

b)

Thermoplastic

c)

Commodity

d)

High polymers