MCQOPTIONS
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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. |
Evidence of fibre structure is based on |
| A. | chemistry of fibre |
| B. | optical properties |
| C. | physical properties |
| D. | all of above |
| Answer» E. | |
| 2. |
Length /width ratio ranges from infinity for |
| A. | long fibrils |
| B. | short fibrils |
| C. | very long fibrils |
| D. | moderate fibrils |
| Answer» D. moderate fibrils | |
| 3. |
Cotton is totally crystalline with disorder between fibrils coming from |
| A. | imperfect register |
| B. | perfect register |
| C. | same matrix |
| D. | different matrix |
| Answer» B. perfect register | |
| 4. |
Mean value of some correlation function relating position of neighboring chains is called as |
| A. | degree of order |
| B. | degree of crystallization |
| C. | degree of uniformity |
| D. | degree of normality |
| Answer» B. degree of crystallization | |
| 5. |
Parameter/s that specify fibre structure is/are |
| A. | degree of order and localization order |
| B. | length/width ratid of localized units |
| C. | degree of orientation and molecular extent |
| D. | all of above |
| Answer» E. | |
| 6. |
In graphite, carbon atoms are joined together in |
| A. | single planes |
| B. | 2 dimensional plane |
| C. | 3 dimensional plane |
| D. | 4 dimensional plane |
| Answer» B. 2 dimensional plane | |
| 7. |
Measure of spread of values of degree of order taken over zones a few molecules wide is called as |
| A. | degree of order |
| B. | degree of localization |
| C. | degree of localization of order |
| D. | degree of normalization |
| Answer» D. degree of normalization | |
| 8. |
Value of X-ray diffraction in cotton is calculated to be |
| A. | 27 |
| B. | 65 |
| C. | 40 |
| D. | 49 |
| Answer» B. 65 | |
| 9. |
A second generation of high performance fibers are mostly |
| A. | inorganic networks |
| B. | linear polymer fibers |
| C. | multi dimensional polymer fibers |
| D. | both a and b |
| Answer» E. | |
| 10. |
Arrangement of bonds and their strength determines the |
| A. | physical properties |
| B. | chemical properties |
| C. | bonding |
| D. | bond strength |
| Answer» B. chemical properties | |
| 11. |
Fibers as well as sheets and blocks of same polymer donot have |
| A. | microscopic form of crystal |
| B. | macroscopic form of crystal |
| C. | bioscopic form of crystal |
| D. | spectroscopic form of crystal |
| Answer» C. bioscopic form of crystal | |
| 12. |
Iodine sorption"s value in wood pulp is calculated to be |
| A. | 52 |
| B. | 27 |
| C. | 13 |
| D. | 32 |
| Answer» C. 13 | |
| 13. |
Weak forces between each molecule of material is called as |
| A. | valency bonds |
| B. | van der Waals forces |
| C. | bonding |
| D. | binding |
| Answer» C. bonding | |
| 14. |
Two or three atoms held together with strong bonds are called as |
| A. | valency bonds |
| B. | weak bond |
| C. | strong atom |
| D. | strong bond |
| Answer» B. weak bond | |
| 15. |
Percentage accessibility of sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 87 |
| B. | 44 |
| C. | 57 |
| D. | 66 |
| Answer» D. 66 | |
| 16. |
Value of degree of order ranges to unity for |
| A. | crystalline fibre |
| B. | non crystalline fibre |
| C. | tight fibre |
| D. | amorphous fibre |
| Answer» B. non crystalline fibre | |
| 17. |
Material can be gas even if molecules are composed of two or three atoms only when force between individual molecule is |
| A. | strong |
| B. | weak |
| C. | negligible |
| D. | variable |
| Answer» C. negligible | |
| 18. |
Example/s of inorganic networks constituting fineness and flexibility is/are |
| A. | glass |
| B. | asbestos and glass |
| C. | glass and plastic |
| D. | plastic |
| Answer» C. glass and plastic | |
| 19. |
Diamond is made up of atoms linked together with |
| A. | van der Waal forces |
| B. | valency bonds |
| C. | weak bonds |
| D. | light forces |
| Answer» C. weak bonds | |
| 20. |
When a structure consists of blocks within a matrix, a crystallinity of 50% needs that spacings between crystallites averages |
| A. | 1/4 of crystalline dimensions |
| B. | 1/3 of crystalline dimensions |
| C. | 2/3 of crystalline dimensions |
| D. | 2/4 of crystalline dimensions |
| Answer» C. 2/3 of crystalline dimensions | |
| 21. |
Polymers that are used for most fibers seems likely to have a driving force towards |
| A. | order localization |
| B. | disoriented order |
| C. | oriented order |
| D. | non localized order |
| Answer» B. disoriented order | |
| 22. |
Value of hailwood horrobin in mercerized cotton is calculated to be |
| A. | 45 |
| B. | 33 |
| C. | 50 |
| D. | 65 |
| Answer» D. 65 | |
| 23. |
Structure in which lattice parameters are subject to a more or less random distribution is called as |
| A. | crystalline structure |
| B. | paracrystalline structure |
| C. | random structure |
| D. | ordered structure |
| Answer» C. random structure | |
| 24. |
Large crystals have |
| A. | more energy |
| B. | less energy |
| C. | zero energy |
| D. | negligible energy |
| Answer» C. zero energy | |
| 25. |
Sometimes structure of paracrystal becomes so disordered that it is referred to as |
| A. | broken |
| B. | amorphous |
| C. | halo |
| D. | powdered |
| Answer» C. halo | |
| 26. |
In diamond all atoms are combined with valency bonds and in a |
| A. | one dimensional network |
| B. | 2D network |
| C. | 3D network |
| D. | 4D network |
| Answer» D. 4D network | |
| 27. |
Type of spherulitic structure that may occur in nylon is |
| A. | streamed spherulitic |
| B. | narrow spherulitic |
| C. | odd spherulitic |
| D. | occluded spherulitic |
| Answer» E. | |
| 28. |
Sharp spots in four point diagram indicates that fibers consists of |
| A. | partially oriented polymers |
| B. | partially crystalline polymers |
| C. | linear polymers |
| D. | all of above |
| Answer» E. | |
| 29. |
Molecular extent in highly folded forms approximates to |
| A. | fold length |
| B. | fold width |
| C. | folds |
| D. | folding density |
| Answer» B. fold width | |
| 30. |
Difference between fine and coarse texture gives rise to |
| A. | size of localized units |
| B. | size of lamella |
| C. | size of cubic units |
| D. | size of micelles |
| Answer» B. size of lamella | |
| 31. |
Rearrangement/s that can be made without much change in overall degree of order is/are |
| A. | increase in size of crystalline region |
| B. | pushing out of defects |
| C. | mechanical deformation |
| D. | all of above |
| Answer» E. | |
| 32. |
In a continuous structure, whole material is of |
| A. | same degree |
| B. | different degree |
| C. | constant degree |
| D. | variable degree |
| Answer» B. different degree | |
| 33. |
Also in 1930, structure was regarded by some people as |
| A. | haphazardly ordered |
| B. | uniformly partly ordered |
| C. | fully ordered |
| D. | randomly ordered |
| Answer» C. fully ordered | |
| 34. |
Length /width ratio ranges to zero for |
| A. | short fibrils |
| B. | moderate fibrils |
| C. | cubic micelles |
| D. | extensive flat sheets |
| Answer» E. | |
| 35. |
Natural polymers are |
| A. | cellulose |
| B. | cellulose and protein |
| C. | polyamide |
| D. | polyester and protein |
| Answer» C. polyamide | |
| 36. |
Alcoholysis's value in mercerized cotton is calculated to be |
| A. | 30 |
| B. | 15 |
| C. | 10 |
| D. | 25 |
| Answer» E. | |
| 37. |
If flexibility is in main chain covalent bonds and weak bonding between long chain molecules, then thermal energy can cause chain to take up a |
| A. | disordered arrangement |
| B. | tangled arrangement |
| C. | random arrangement |
| D. | all of above |
| Answer» E. | |
| 38. |
If molecules are heavy and attractive forces are strong then material would be |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | both a and b |
| Answer» E. | |
| 39. |
Elastomeric fibers require |
| A. | low stretch |
| B. | high stretch |
| C. | negligible stretch |
| D. | variable stretch |
| Answer» C. negligible stretch | |
| 40. |
Diffraction evidence that structure is a mixture of order and disorder is supported by values of |
| A. | density |
| B. | moisture uptake |
| C. | analytical techniques |
| D. | all of above |
| Answer» E. | |
| 41. |
Hydrogen bond in water are strong enough to hold molecules as a crystalline solid at |
| A. | 10 degrees |
| B. | below 0 degree |
| C. | above 0 degree |
| D. | 100 degrees |
| Answer» C. above 0 degree | |
| 42. |
Cotton linter's percentage accessibility measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 50 |
| B. | 78 |
| C. | 53 |
| D. | 99 |
| Answer» B. 78 | |
| 43. |
Length /width ratio ranges to unity for |
| A. | cubic micelles |
| B. | extensive flat sheets |
| C. | moderate fibrils |
| D. | short fibrils |
| Answer» B. extensive flat sheets | |
| 44. |
In polymers, annealing requires small crystals to melt down and |
| A. | reform as larger crystals |
| B. | reform as smaller crystals |
| C. | reform as bond |
| D. | reform as molecule |
| Answer» B. reform as smaller crystals | |
| 45. |
Percentage accessibility of mercerised sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 70 |
| B. | 49 |
| C. | 48 |
| D. | 50 |
| Answer» B. 49 | |
| 46. |
Large extension of any material is |
| A. | reversible |
| B. | irreversible |
| C. | weak |
| D. | strong |
| Answer» B. irreversible | |
| 47. |
Characteristic dimensions of fibers are basis of their |
| A. | use |
| B. | bonding |
| C. | properties |
| D. | strength |
| Answer» B. bonding | |
| 48. |
In woolen fabrics, fancy effects can be obtained in |
| A. | weaving |
| B. | spinning |
| C. | dyeing |
| D. | all of above |
| Answer» C. dyeing | |
| 49. |
Needles on cylinders can be |
| A. | inclined |
| B. | curved with a hook |
| C. | saw tooth shaped |
| D. | all of above |
| Answer» E. | |
| 50. |
In post carding lap drawing frame, fiber web leaving each single card is deviated by an angle of |
| A. | 10 degrees |
| B. | 35 degrees |
| C. | 45 degrees |
| D. | 90 degrees |
| Answer» E. | |