MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Nylons are polar polymers and have good hydrocarbon resistance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The nylon-6, 6 have high crystallinity which imparts? |
| A. | Low strength |
| B. | Low meting point |
| C. | Toughness and elasticity |
| D. | Retention to poor mechanical properties |
| Answer» D. Retention to poor mechanical properties | |
| 3. |
Nylon-6,6 is made by the condensation polymerisation of hexamethylene diamine and adipic acid in the molar ratio of ____________ |
| A. | 2 : 3 |
| B. | 1 : 2 |
| C. | 3 : 5 |
| D. | 1 : 1 |
| Answer» E. | |
| 4. |
The cyclohexanone is converted into cyclohexanone-oxime by ____________ |
| A. | Treatment with hydroxylamine |
| B. | Oxidation |
| C. | Reduction |
| D. | Backmann rearrangement |
| Answer» B. Oxidation | |
| 5. |
Nylon-6 can be prepared by ring opening polymerisation of ____________ |
| A. | Amino caproic acid |
| B. | Caprolactum |
| C. | Adipic acid |
| D. | Terephthalic acid |
| Answer» C. Adipic acid | |
| 6. |
Hydrogen bonding is responsible for maintaining the alignment of ____________ |
| A. | Stereoregular chains of isotactic polypropylene |
| B. | Polyesters |
| C. | Polyacrylonitrile |
| D. | Polyamides |
| Answer» E. | |
| 7. |
Nylon-66, PET and PAN all have Tg around ____________ |
| A. | 100 <sup>0</sup>C |
| B. | 200 <sup>0</sup>C |
| C. | 300 <sup>0</sup>C |
| D. | 500 <sup>0</sup>C |
| Answer» B. 200 <sup>0</sup>C | |
| 8. |
The tensile strength of the fiber is ______________ |
| A. | Very Low |
| B. | Low |
| C. | High |
| D. | Intermediate |
| Answer» D. Intermediate | |