Certificate In Plastic Molding Science (Toys)

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Certificate In Plastic Molding Science (Toys)

Online Examination Detail:
Duration- 60 minutes.
Number of Questions- 30. (Multiple Choice Questions).
Maximum Marks- 100, Passing Marks- 40%.
There is no negative marking.

Candidate Details

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1. Which plastic materials contain strong cross linking’s in their molecular structure?

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2. HDPE is a tough plastic used for making toys

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3. What are the types of injection moulding defects?

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4. What is the use of epoxy resin from commercial point of view?

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5. Polyamides is also known as_________.

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6. Plastics are the materials obtained by mixing the __________ with the other ingredients whichimpart special engineering properties.

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7. Specific gravity of the plastics is usually.

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8. the advantages of plastics?

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9. ________is undesirable extra material appearing at parting line.

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10. Which of the following is an example of thermoplastic material?

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11. What are the divided sections of screw of injection mouldingmachines?

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12. What are theadvantages ofplastics over metals?

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13. Where does the granular moulding material get loaded into?

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14. Thermos plastics becomes ________ on heating.

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15. The word plastic comes from _________.

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16. Plastic toys are usually produced by using:

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17. Plastics are ________ in weight.

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18. Which of the following is a thermosetting polymer?

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19. ____________ type of cooling is usually employed to cool core of long cylindrical products.

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20. Injection moulding is the ideal method for processing.

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21. ___________is distortion of product surface.

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22. Fixed half of mould is attached to________.

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23. Injection pressure and holding pressure are same.

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24. What is a Mold?

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25. What are the main elements of Mold?

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26. Plastic resin is used in the paint industry as _________.

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27. What are the general types of Molds?

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28. ____________time needed by plunger to force melt in cavity of closed mould.

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29. The plastics which soften when heat is applied with or without pressure, but requires cooling to set them to shape are called as;

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30. The heating and cooling of the thermos plastics _________the chemical nature.

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