MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
___________PREVENT_MOULDED_ARTICLE_FROM_STICKING_TO_THE_FABRICATION_EQUIPMENT.?$ |
| A. | Catalyst |
| B. | Fillers |
| C. | Lubricants |
| D. | Stabilizers |
| Answer» D. Stabilizers | |
| 2. |
Which of the following are not used lubricants?$ |
| A. | Oils |
| B. | Waxes |
| C. | Oleates |
| D. | Salts |
| Answer» E. | |
| 3. |
Lubricants_are_used_to_prevent_the_moulded_article_from__________$ |
| A. | Rusting |
| B. | Sticking |
| C. | Not sticking |
| D. | Burning |
| Answer» C. Not sticking | |
| 4. |
How many types of fabrication methods are there? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» E. | |
| 5. |
Compression moulding is applicable to ___________ |
| A. | Thermoplastic resins |
| B. | Thermo setting resins |
| C. | Both thermo plastic and thermo setting resins |
| D. | Neither thermo plastics nor thermo setting resins |
| Answer» D. Neither thermo plastics nor thermo setting resins | |
| 6. |
Which of the following is a stabilizer? |
| A. | White lead |
| B. | PbO |
| C. | ZnO |
| D. | Metallic oxides |
| Answer» B. PbO | |
| 7. |
___________ is used to improve the thermal stability during polymerisation. |
| A. | Accelerators |
| B. | Colouring materials |
| C. | Stabilizers |
| D. | Lubricants |
| Answer» D. Lubricants | |
| 8. |
Which of the following are used as the fillers? |
| A. | Vegetable oils |
| B. | Camphor |
| C. | Ester of stearic acids |
| D. | Wood flour |
| Answer» E. | |
| 9. |
The percentage of the fillers is up to ___________ total moulding mixture. |
| A. | 20% |
| B. | 30% |
| C. | 40% |
| D. | 50% |
| Answer» E. | |
| 10. |
__________ makes the polymers impermeable to x-rays. |
| A. | Strontium salts |
| B. | Ammonium salts |
| C. | Calcium salts |
| D. | Barium salts |
| Answer» E. | |
| 11. |
Plasticizers ___________ the strength of the plastics. |
| A. | Increase |
| B. | Decrease |
| C. | Do not affect |
| D. | May increase above the room temperature |
| Answer» C. Do not affect | |
| 12. |
Plasticizers are used to get the ___________ between the polymeric molecules. |
| A. | Attraction |
| B. | Freedom of movement |
| C. | Pi-bond |
| D. | Sigma bond |
| Answer» D. Sigma bond | |
| 13. |
___________ increases the flexibility of the polymer. |
| A. | Resins |
| B. | Catalysts |
| C. | Lubricants |
| D. | Plasticizers |
| Answer» E. | |
| 14. |
__________ acts as a binder in plastics. |
| A. | Resins |
| B. | Plasticizers |
| C. | Lubricant |
| D. | Accelerators |
| Answer» B. Plasticizers | |
| 15. |
Usually the polymer resin is mixed with four to ten ingredients during the fabrication to impart useful properties to the finished articles. This is called mix. |
| A. | True |
| B. | False |
| Answer» B. False | |