1. Which number represents the resin code for Polyvinyl chlonde?

a. 1
b. 3
c. 4
d. 6

Answer :- b

2. Which of the following statements is/are correct?
i. Plastics are both thermally and electrically nonconductive.
ii. Plastics have insufficient strength to weight ratio.
111. Plastics are generally resistant to chemicals and corrosion.
1V. Plastics can be highly durable.

a. 1, & 111
b. iii. & iv
c. i, iii, & iv
d. All are correct

Answer :- c

3. which of the following is a thermoplastic?

a. Silicones
b. Nylon
c. Phenolic
d. Polyurethane

Answer :- b

4. Which of the following is not a property of PET?

a. Excellent moisture barrier
b. Hydrophilic in nature
c. Semi-rigid
d. Hygroscopic in nature

Answer :- b

5. The plastics that are soft, elastic with low modulus of elasticity and elongation ranging from 10 times their original size are called_______

a. Soft plastics
b. Elastomers
c. Rigid plastics
d. Semi-rigid plastics

Answer :- b

6. What was the increment in the per capita plastic products consumption in India from 2014 to 2017?

a. 11 kg/person
b. 1.3 kg/person
c. 9.7 kg/person
d. 6 kg person

Answer :- b

7. Which of the following region of India consumes the least amount of plastic, as per Chemicals & Petrochemical Statistics, 2013?

a. Southern
b. Western
c. Northern
d. Eastern

Answer :- d

8. Stabilizers are type of additives added during the production of plastics to:

a. Remove fire-propagating radicals like H, OH and others
b. Prolong the lifetime of the polymer by suppressing degradation
c. Improve the plasticity and to impart softness to the plastic
d. Impart strength, hardness and other properties to the plastic

Answer :- b

9. Which type of process is used to make plastic sheets from a dough-consistent thermoplastic mass by passing through a series of heating and cooling rollers?

a. Extrusion
b. Injection moulding
c. Calendaring
d. Blow moulding

Answer :- c

10. Which of the following is not an additive used to enhance the property of plastics?

a. Fillers
b. Plasticizers
c. De-nitrifiers
d.None of the above

Answer :- c

11. Plastics are synthetic or semi synthetic organic compounds.

a. True
b.False

Answer :- a

12. Thermoplastics are generally more expensive than thermoset plastics.

a. True
b. False

Answer :- b

13.

Answer :- b

14. Thermoset plastics undergo reversible chemical process.

a. True
b. False

Answer :- b

15. Isopropyl alcohol is a very commonly used flame retardant in the manufacture of plastics

a. True
b. False

Answer :- b