dpt 4th sem plastic testing-1 question bank

           CENTRAL INSTITUTE OF PLASTICS ENGINEERING & TECHNOLOGY

                                               Question Bank

1 MARK—QUESTION

2 MARK ---QUESTION

3 MARK --- QUESTION

4/5 MARK ----QUESTION

COURSE : DPT

SEMESTER : IV

SUBJECT :  PLASTICS TESTING I

                                                        ------

1. How to perform Copper wire test for PVC?

2. What is Lassaigne’s test?

3. What is the Formula to Density determination by sinker method?

4. Which plastics have nitrogen in their structural formula and by which test presence of nitrogen in determined?

5. Full of ASTM, ISO. BIS, DIN?

6. How to make specimen by using of contour punching machine

7. What is the ASTM no. for conditioning and what are the conditions?

8. What is Beilstein’s test

9. High value of tensile strength obtain from Injection molded sample or compression molded sample and why?

10. Why Black shooty dense smock obtained on burning of PS?

11. What is the difference between izod and charpy impact?

12. What are the units

i) K value ii) MFI iii) compressive strength iv) cup flow

13. How to perform K value is perform for PVC?

14. Condition which affect the MFI results?

15. ASTM no. of

i) MFI ii) tensile strength iii) HDT iv) abrasion resistance

16. How to perform VST test?

17. What is the formula for sinker method of density and RD bottle method of density

18. How to perform Cup flow

19. Which of the material are self extinguishing give examples?

20. What are shore hardness and its types?

21. For which test dilatometer is used explain the test?

22. What is the difference between HDT and VST?

23. What is the difference between Shore A and Shore D hardness?

24. How to identify POM material?

25. Size of specimens

i) Izod impact ii) Abrasion resistance

26. Explain tensile strength of plastics with its standard number?

27. How to perform low temperature brittleness test?

28. What is bulk density how it performed?

29. What is the difference between flame behavior of POM and PS?

30. Explain stress strain curve of hard and tough material?

31. What is stress relaxation?

32. What is creep?

33. What the difference is between creep and stress relaxation?

34. How to prepare specimen by contour punching machine and what is its limitations?

35. Condition which affect the Density results?

36. Explain fatigue in plastics?

37. Explain the ASTM D 790?

38. Explain the ASTM D 1044?

39. Units of

i) Density ii) MFI

40. MFI condition for

i) PP ii) PE iii) nylon iv) PS

41. What is the importance of standard and specification?

42. Explain ASTM D 648?

43. How to identify nylon material?

44. Explain Rockwell hardness of plastics material?

45. Explain brook field viscosity of plastics material?

46. Explain three point and four point bending flexural test?

47. Which method is used for transparent specimen preparation and why?

48. What is the difference between tear and shear?

49. If we mix PP granule and PS granule together then how to separate them in seconds?

50. What is the coefficient of friction test of film?