MCQOPTIONS
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MCQOPTIONS
This section includes 197 Mcqs, each offering curated multiple-choice questions to sharpen your Textile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Rapid quenching leads to |
| A. | haphazard structure |
| B. | long structure |
| C. | linear structure |
| D. | uniform structure |
| Answer» E. | |
| 2. |
Materials that meet extensibility criteria are |
| A. | linear polymers |
| B. | partially crystalline |
| C. | partially oriented |
| D. | all of above |
| Answer» E. | |
| 3. |
Value of formylation in cotton is calculated to be |
| A. | 21 |
| B. | 63 |
| C. | 31 |
| D. | 35 |
| Answer» B. 63 | |
| 4. |
If material has strong tension, then molecules straightens out giving a |
| A. | small extension |
| B. | large extension |
| C. | medium extension |
| D. | variable extension |
| Answer» C. medium extension | |
| 5. |
Number of natural polymers are |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 7 |
| Answer» B. 4 | |
| 6. |
Strength of textile yarn not only depends on fibre length but also on extent to which fibre |
| A. | bends |
| B. | folds back |
| C. | folds forward |
| D. | folds repeatedly |
| Answer» C. folds forward | |
| 7. |
Water clarifies importance of hydrogen bond via |
| A. | it's properties |
| B. | being common |
| C. | fibre plasticizer |
| D. | all of above |
| Answer» E. | |
| 8. |
Ordinary textile fibers must be elastic upto breaking extensions between |
| A. | 10 and 100% |
| B. | 20 and 100% |
| C. | 5 and 100% |
| D. | 5 and 50% |
| Answer» E. | |
| 9. |
Glass and crystalline solid are |
| A. | less extensible |
| B. | strongly bonded |
| C. | intermediate extensible |
| D. | variably extensible |
| Answer» B. strongly bonded | |
| 10. |
Fine details of packing includes relative extent of |
| A. | rotating |
| B. | fringing |
| C. | folding |
| D. | fringing and folding |
| Answer» E. | |
| 11. |
Textile fibers have |
| A. | small repeats |
| B. | longer repeats |
| C. | twisted repeats |
| D. | straight repeats |
| Answer» C. twisted repeats | |
| 12. |
Individual fibers may weigh only a few |
| A. | grams |
| B. | micrograms |
| C. | milligrams |
| D. | kgs |
| Answer» C. milligrams | |
| 13. |
Flattened micelles merges into |
| A. | small lamella |
| B. | large lamella |
| C. | flat lamella |
| D. | elongated lamella |
| Answer» B. large lamella | |
| 14. |
Light atoms are attracted towards each other with |
| A. | attractive forces |
| B. | combining forces |
| C. | weak forces |
| D. | strong forces |
| Answer» D. strong forces | |
| 15. |
Concept of crystalline and non crystalline regions results into details regarding fibre |
| A. | structure |
| B. | density |
| C. | bonding |
| D. | strength |
| Answer» B. density | |
| 16. |
In addition to covalent bonds and van der Waal forces, another class of bonds of medium strength is known and is equally important, it is called as |
| A. | oxygen bond |
| B. | intermediate bond |
| C. | hydrogen bond |
| D. | null bond |
| Answer» D. null bond | |
| 17. |
Fibers as per defined by Textile Institute as units of matter characterized by |
| A. | flexibility |
| B. | fineness |
| C. | high ratio of length to thickness |
| D. | all of above |
| Answer» E. | |
| 18. |
Percentage accessibility of birch xylan measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 50 |
| B. | 53 |
| C. | 78 |
| D. | 99 |
| Answer» E. | |
| 19. |
In light of metal physics, disorder in structure is due to |
| A. | vacancies |
| B. | folds and twisting of chains |
| C. | chain ends and extra units |
| D. | all of above |
| Answer» E. | |
| 20. |
When there is no room for branches of spherulitic structure to grow, then it becomes |
| A. | typical structure |
| B. | young structure |
| C. | fringed micelle structure |
| D. | bonded structure |
| Answer» D. bonded structure | |
| 21. |
Polymers including those used in fibers can be crystallized from dilute solution to give |
| A. | crystals |
| B. | small crystals |
| C. | single crystals |
| D. | two crystals |
| Answer» D. two crystals | |
| 22. |
In polymers, as compared to metals defects can move and eliminate |
| A. | movement |
| B. | boundaries |
| C. | strength |
| D. | bonding |
| Answer» C. strength | |
| 23. |
Water is liquid with limited equilibrium with water vapors at |
| A. | 100 degrees |
| B. | between 0 and 100 degrees |
| C. | 0 degrees |
| D. | 90 degrees |
| Answer» C. 0 degrees | |
| 24. |
Length in length/width ratio refers to direction of |
| A. | chain axis |
| B. | molecule axis |
| C. | vertical axis |
| D. | horizontal axis |
| Answer» B. molecule axis | |
| 25. |
Material that is highly ordered tends to have |
| A. | lower free energy |
| B. | lower internal energy |
| C. | lower external energy |
| D. | higher free energy |
| Answer» B. lower internal energy | |
| 26. |
For low crystallinity fibers like in cellulose, structure proposed by Hearle is a |
| A. | fringed structure |
| B. | fibril structure |
| C. | fringed fibril structure |
| D. | random structure |
| Answer» D. random structure | |
| 27. |
Uniform intermediate degree of order is not very favorable in |
| A. | entropy |
| B. | internal energy |
| C. | both a and b |
| D. | external energy |
| Answer» D. external energy | |
| 28. |
Estimated of degree order can be obtained from |
| A. | X-ray diffraction |
| B. | accessibility |
| C. | infrared absorption or NMR studies |
| D. | all of above |
| Answer» E. | |
| 29. |
In natural fibers, genetic control leads to lay down of |
| A. | continuous forms |
| B. | fibrillar forms |
| C. | gigantic forms |
| D. | networked form |
| Answer» C. gigantic forms | |
| 30. |
Fibrils in wool are seperated by a chemically |
| A. | perfect register |
| B. | imperfect register |
| C. | different matrix |
| D. | same matrix |
| Answer» D. same matrix | |
| 31. |
Small crystals that are imperfectly packed together gives |
| A. | poor x-ray diffraction |
| B. | low density |
| C. | accessibility to surfaces of crystallites or crystalline fibrils |
| D. | all of above |
| Answer» E. | |
| 32. |
Percentage accessibility of potato starch measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 78 |
| B. | 50 |
| C. | 97 |
| D. | 53 |
| Answer» D. 53 | |
| 33. |
Crystal size depending on processing conditions is limited to a maximum of |
| A. | 5 nm |
| B. | 20 nm |
| C. | 15 nm |
| D. | 10 nm |
| Answer» E. | |
| 34. |
Graphite is made up of |
| A. | pure carbon |
| B. | mixed carbon |
| C. | combination of carbon |
| D. | carbon and other atoms |
| Answer» B. mixed carbon | |
| 35. |
Textile fibers must be made up of material that can be |
| A. | produced in special form |
| B. | stable |
| C. | both a and b |
| D. | unstable |
| Answer» D. unstable | |
| 36. |
What is value of density in wood pulp? |
| A. | 65 |
| B. | 50 |
| C. | 36 |
| D. | 64 |
| Answer» C. 36 | |
| 37. |
Fibers with high crystalline regions and high performance have fibrillar structure which is |
| A. | tightly packed |
| B. | loosely packed |
| C. | weakly bonded |
| D. | strongly bonded |
| Answer» B. loosely packed | |
| 38. |
Value of moisture regain in wood pulp is calculated to be |
| A. | 62 |
| B. | 49 |
| C. | 42 |
| D. | 77 |
| Answer» C. 42 | |
| 39. |
Value of acid hydrolysis in wood pulp is calculated to be |
| A. | 10 |
| B. | 14 |
| C. | 28 |
| D. | 20 |
| Answer» C. 28 | |
| 40. |
Fibre properties can be predicted from knowledge of |
| A. | chemistry of chain modules |
| B. | 6 parameters of fine structures |
| C. | larger scale structural features |
| D. | all of above |
| Answer» E. | |
| 41. |
For polymers, melting down of crystals and reforming is not possible when crystals have |
| A. | become smaller |
| B. | become larger |
| C. | grown to a certain size |
| D. | certain strength |
| Answer» D. certain strength | |
| 42. |
Hydrogen bond is formed when electrons are shared by outer rings of |
| A. | hydrogen and oxygen |
| B. | hydrogen only |
| C. | oxygen only |
| D. | any atom |
| Answer» B. hydrogen only | |
| 43. |
In linear polymers, linking is in |
| A. | one direction |
| B. | two direction |
| C. | three directions |
| D. | multiple directions |
| Answer» B. two direction | |
| 44. |
Mean angle between chain molecules and fibre axis is called as |
| A. | degree of normality |
| B. | degree of localization |
| C. | degree of order |
| D. | degree of orientation |
| Answer» E. | |
| 45. |
What is percentage accessibility of rayon measured by exchange of hydroxyl hydrogens for deutrium? |
| A. | 99 |
| B. | 78 |
| C. | 53 |
| D. | 50 |
| Answer» C. 53 | |
| 46. |
Synthetic polymers are |
| A. | polyamide |
| B. | polyester and polyolefin |
| C. | vinyl and acrylic |
| D. | all of above |
| Answer» E. | |
| 47. |
From melt or more concentrated solution, bulk crystallization of polymers lead to |
| A. | heavy structure |
| B. | spherulitic structure |
| C. | round structure |
| D. | strong structure |
| Answer» C. round structure | |
| 48. |
Fibers used as transducers or change with environment are called as |
| A. | fine fibers |
| B. | rigid fibers |
| C. | smart fibers |
| D. | soft fibers |
| Answer» D. soft fibers | |
| 49. |
Percentage accessibility of finely ground cotton measured by exchange of hydroxyl hydrogens for deutrium is |
| A. | 57 |
| B. | 87 |
| C. | 66 |
| D. | 44 |
| Answer» C. 66 | |
| 50. |
A second generation of high performance fibers introduced for functional applications have |
| A. | high strength and low extensibility |
| B. | low strength and low extensibility |
| C. | high strength and high extensibility |
| D. | low strength and high extensibility |
| Answer» B. low strength and low extensibility | |