MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Molecular arrangement determines material's |
| A. | characteristics |
| B. | bonding |
| C. | properties |
| D. | all of above |
| Answer» E. | |
| 2. |
Sensitivity of material at ordinary temperatures affects |
| A. | behavior |
| B. | processing |
| C. | usage |
| D. | all of above |
| Answer» E. | |
| 3. |
Annealing in crystals tend to give growth in |
| A. | crystal size |
| B. | crystal texture |
| C. | crystal density |
| D. | crystal structure |
| Answer» B. crystal texture | |
| 4. |
In lamellar crystals, chain molecules are folded |
| A. | back and forth |
| B. | in forward direction |
| C. | in backward direction |
| D. | repeatedly |
| Answer» B. in forward direction | |
| 5. |
Material when given tension straightens out and return on releasing tension, it is called as |
| A. | random state |
| B. | rubbery state |
| C. | predictable state |
| D. | unpredictable state |
| Answer» C. predictable state | |
| 6. |
Chain of cellulose can be extended |
| A. | in length |
| B. | in width |
| C. | to a limit |
| D. | to 1 meter |
| Answer» B. in width | |
| 7. |
For each needle on cylinder, side can be determined as |
| A. | concave |
| B. | convex and concave |
| C. | round and concave |
| D. | convex |
| Answer» C. round and concave | |
| 8. |
Force exerted on fiber by needle tip generates a |
| A. | pointing effect |
| B. | stretching effect |
| C. | sharpening effect |
| D. | deforming effect |
| Answer» C. sharpening effect | |
| 9. |
Interaction/s of wool carding process before combing is/are |
| A. | carding |
| B. | striping |
| C. | lifting |
| D. | all of above |
| Answer» E. | |
| 10. |
When concave and convex sides face each other, needles are inclined in same direction as |
| A. | roller |
| B. | card |
| C. | lap |
| D. | card sliver |
| Answer» B. card | |
| 11. |
Shape of fibrils is |
| A. | ribbon like |
| B. | cylindrical |
| C. | both a and b |
| D. | oval |
| Answer» D. oval | |
| 12. |
Characteristic/s of fibers necessary other than textiles is/are |
| A. | high temperature stability |
| B. | minimum strength |
| C. | moderate extensibility |
| D. | all of above |
| Answer» E. | |
| 13. |
Fibre physics is a study about fibre |
| A. | structure |
| B. | physical properties and structure |
| C. | physical properties and chemical properties |
| D. | bonding |
| Answer» C. physical properties and chemical properties | |
| 14. |
Spherulitic structure starts from crystallization as folded chain lamellae on |
| A. | separate nuclei |
| B. | same nuclei |
| C. | double nuclei |
| D. | combined nuclei |
| Answer» B. same nuclei | |
| 15. |
On basis of thermodynamics, its clear that there will be a driving force towards |
| A. | short fibrils |
| B. | short orders |
| C. | increased orders |
| D. | high orders |
| Answer» D. high orders | |
| 16. |
Graphite easily splits up because of |
| A. | force |
| B. | pressure |
| C. | relative action |
| D. | weak bond |
| Answer» E. | |
| 17. |
Folds can be removed using |
| A. | drawing |
| B. | drafting |
| C. | spinning |
| D. | weaving |
| Answer» C. spinning | |
| 18. |
Light atoms can move with help of |
| A. | strong energy |
| B. | atom's energy |
| C. | surrounding's energy |
| D. | force |
| Answer» C. surrounding's energy | |
| 19. |
Helium is a/an |
| A. | ion |
| B. | electron |
| C. | strong atom |
| D. | light atom |
| Answer» E. | |
| 20. |
At ordinary temperatures, hydrogen bonds are in a |
| A. | strong state |
| B. | weak state |
| C. | sensitive state |
| D. | broken state |
| Answer» D. broken state | |
| 21. |
Percentage accessibility of flax measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 49 |
| B. | 48 |
| C. | 50 |
| D. | 70 |
| Answer» D. 70 | |
| 22. |
In electron microscopy, with stiffer molecules one can observe |
| A. | twisted textures |
| B. | fibrillar textures |
| C. | wrinkled textures |
| D. | random textures |
| Answer» C. wrinkled textures | |
| 23. |
In elastomeric fibers, orientation is |
| A. | required |
| B. | not required |
| C. | mandatory |
| D. | optional |
| Answer» C. mandatory | |
| 24. |
Single cotton fibre being as thick as thumb would be |
| A. | 100 m long |
| B. | 1000 m long |
| C. | 10 m long |
| D. | 1 m long |
| Answer» B. 1000 m long | |
| 25. |
What is value of periodate oxidation in regenerated cellulose? |
| A. | 10 |
| B. | 8 |
| C. | 15 |
| D. | 20 |
| Answer» E. | |
| 26. |
In ordinary substances composed of small molecules, its possible to get rid of |
| A. | work |
| B. | bonding disorder |
| C. | work disorder |
| D. | crystallization disorder |
| Answer» D. crystallization disorder | |
| 27. |
What are fibrils regarded as when they become shorter? |
| A. | micelles |
| B. | elongated micelles |
| C. | short micelles |
| D. | flat micelles |
| Answer» C. short micelles | |
| 28. |
In native cellulose fibers, chains are estimated to have |
| A. | 1000 glucose rings |
| B. | 100000 glucose rings |
| C. | 100 glucose rings |
| D. | 150000 glucose rings |
| Answer» C. 100 glucose rings | |
| 29. |
Structure of cellulose I is |
| A. | parallel |
| B. | altered |
| C. | directional |
| D. | non directional |
| Answer» B. altered | |
| 30. |
Cellulose has a ribbon like structure and is not easy to |
| A. | bend |
| B. | twist or bend |
| C. | straighten up |
| D. | bond with other structures |
| Answer» C. straighten up | |
| 31. |
Length of complete chain of cellulose fibre is |
| A. | 2 micrometer |
| B. | 4 micrometer |
| C. | 5 micrometer |
| D. | 8 micrometer |
| Answer» D. 8 micrometer | |
| 32. |
Which material is a modification of cellulose fibre? |
| A. | protein |
| B. | nylon |
| C. | cotton |
| D. | glass |
| Answer» D. glass | |
| 33. |
For producing viscose solution for spinning into rayon, chain length is considerably |
| A. | increased |
| B. | reduced |
| C. | constant |
| D. | variable |
| Answer» C. constant | |
| 34. |
Resin treated cross linked cotton is of |
| A. | less importance |
| B. | great importance |
| C. | negligible importance |
| D. | no importance |
| Answer» C. negligible importance | |
| 35. |
Hydrogen bonding in cellulose is |
| A. | in one plane |
| B. | in two planes |
| C. | multi directional |
| D. | random |
| Answer» B. in two planes | |
| 36. |
For long molecules, extrusion into fibers is |
| A. | not possible |
| B. | possible |
| C. | dependable |
| D. | random |
| Answer» B. possible | |
| 37. |
Cellulose molecule consists of a series of |
| A. | calcium rings |
| B. | protein rings |
| C. | glucose rings |
| D. | fructose rings |
| Answer» D. fructose rings | |
| 38. |
What does increased chain lengths give? |
| A. | better properties |
| B. | worse properties |
| C. | constant properties |
| D. | variable properties |
| Answer» B. worse properties | |
| 39. |
All molecules in parallel crystal lattice of cellulose I without chain folding points in |
| A. | opposite direction |
| B. | same direction |
| C. | particular direction |
| D. | random direction |
| Answer» C. particular direction | |
| 40. |
Regenerated cellulose fibers contains |
| A. | plastic |
| B. | impurities |
| C. | hydrogen |
| D. | cellulose II |
| Answer» E. | |
| 41. |
Width of complete chain of cellulose fibre is |
| A. | 8 x 0.0010 micrometer |
| B. | 8 x 0.010 micrometer |
| C. | 8 x 0.10 micrometer |
| D. | 8 x 10 micrometer |
| Answer» B. 8 x 0.010 micrometer | |
| 42. |
Enzyme complexes joins with glucose molecules into long chain cellulose molecules in a |
| A. | small cell |
| B. | big molecule |
| C. | growing cell |
| D. | constant cell |
| Answer» D. constant cell | |
| 43. |
Natural cellulose is aggregated into |
| A. | fine microfibrils |
| B. | rough microfibrils |
| C. | rigidity |
| D. | flexibility |
| Answer» B. rough microfibrils | |
| 44. |
Length to width ratio of cellulose fibre is same as that of |
| A. | protein |
| B. | nylon |
| C. | glass |
| D. | cotton |
| Answer» E. | |
| 45. |
According to Manley, assembly of fine microfibrils without amorphous regions is called |
| A. | fine structure |
| B. | microfibrils |
| C. | rough structure |
| D. | porous material |
| Answer» B. microfibrils | |
| 46. |
Length to width ratio of cellulose fibre is |
| A. | 3 x 1000 micrometer long by 15 micrometer wide |
| B. | 3 x 100000 micrometer long by 15 micrometer wide |
| C. | 3 x 1000 micrometer long by 25 micrometer wide |
| D. | 3 x 100 micrometer long by 25 micrometer wide |
| Answer» C. 3 x 1000 micrometer long by 25 micrometer wide | |
| 47. |
According to Hearle, X-ray diffraction results could be explained by |
| A. | small size of crystalline fibrils |
| B. | density of imperfect packing |
| C. | accessibility by the fibril surface |
| D. | all of above |
| Answer» E. | |