MCQOPTIONS
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MCQOPTIONS
This section includes 21 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. |
In moving bed catalytic cracking, the catalyst is in the form of ____________ |
| A. | fine powder |
| B. | pallets |
| C. | liquid form |
| D. | gaseous form |
| Answer» B. pallets | |
| 2. |
In vapour phase thermal cracking, the temperature achieved is ___________ |
| A. | 200-400oC |
| B. | 600-650oC |
| C. | 500-820oC |
| D. | 700-800oC |
| Answer» C. 500-820oC | |
| 3. |
In fixed bed catalytic cracking, the catalyst is reactivated after every __________ |
| A. | 8-10hrs |
| B. | 20-24hrs |
| C. | 5-7hrs |
| D. | 12-15hrs |
| Answer» B. 20-24hrs | |
| 4. |
Which of the following order of petrol knocking is true? |
| A. | aromatics > branched paraffins > olefins > cyclo paraffins > aromatics |
| B. | straight chain paraffins > olefins > branched paraffins > cyclo paraffins > straight chain paraffins |
| C. | straight chain paraffins > branched paraffins > olefins > cyclo paraffins > aromatics |
| D. | straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins |
| Answer» D. straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins | |
| 5. |
To improve anti knock of diesel ___________ are added. |
| A. | TEL |
| B. | Pre-ignition dopes |
| C. | Di ethyl telluride |
| D. | N-hexa decane |
| Answer» C. Di ethyl telluride | |
| 6. |
Octane number is a rating of ___________ |
| A. | petrol knocking |
| B. | diesel knocking |
| C. | petrol cracking |
| D. | diesel cracking |
| Answer» B. diesel knocking | |
| 7. |
WHICH_OF_THE_FOLLOWING_ORDER_OF_PETROL_KNOCKING_IS_TRUE??$ |
| A. | aromatics > branched paraffins > olefins > cyclo paraffins > aromatics |
| B. | straight chain paraffins > olefins > branched paraffins > cyclo paraffins > straight chain paraffins |
| C. | straight chain paraffins > branched paraffins > olefins > cyclo paraffins > aromatics |
| D. | straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins |
| Answer» D. straight chain paraffins > branched paraffins > olefins > aromatics > cyclo paraffins | |
| 8. |
In vapour phase thermal cracking, the temperature achieved is ___________$ |
| A. | 200-400<sup>o</sup>C |
| B. | 600-650<sup>o</sup>C |
| C. | 500-820<sup>o</sup>C |
| D. | 700-800<sup>o</sup>C |
| Answer» C. 500-820<sup>o</sup>C | |
| 9. |
In fixed bed catalytic cracking, the catalyst is reactivated after every __________ |
| A. | 8-10hrs |
| B. | 20-24hrs |
| C. | 5-7hrs |
| D. | 12-15hrs |
| Answer» B. 20-24hrs | |
| 10. |
The pressure applied in fixed-bed catalytic cracking is __________ |
| A. | 10kg/cm<sup>2</sup> |
| B. | 50kg/cm<sup>2</sup> |
| C. | 100kg/cm<sup>2</sup> |
| D. | 1.5kg/cm<sup>2</sup> |
| Answer» E. | |
| 11. |
The pressure applied in vapour phase cracking is __________ |
| A. | 10-20kg/cm<sup>2</sup> |
| B. | 100kg/cm<sup>2</sup> |
| C. | 50kg/cm<sup>2</sup> |
| D. | 80kg/cm<sup>2</sup> |
| Answer» B. 100kg/cm<sup>2</sup> | |
| 12. |
The gasoline vapours are purified by __________ |
| A. | thermal cracking |
| B. | catalytic cracking |
| C. | stabilization |
| D. | knocking |
| Answer» D. knocking | |
| 13. |
In moving bed catalytic cracking, the catalyst is in the form of ____________ |
| A. | fine powder |
| B. | pallets |
| C. | liquid form |
| D. | gaseous form |
| Answer» B. pallets | |
| 14. |
In the catalytic cracking, what Is the catalyst used? |
| A. | Nacl |
| B. | Kcl |
| C. | ZnSO<sub>4</sub> |
| D. | Al<sub>2</sub>O<sub>3</sub> |
| Answer» E. | |
| 15. |
Knocking is also called as __________ |
| A. | cracking |
| B. | pinging |
| C. | doping |
| D. | crushing |
| Answer» C. doping | |
| 16. |
In liquid phase thermal cracking, the yield of petrol is ________ |
| A. | 50%-60% |
| B. | 60%-70% |
| C. | 70%-80% |
| D. | 80%-90% |
| Answer» B. 60%-70% | |
| 17. |
Pre-ignition of the fuel is seen in _________ |
| A. | petrol knocking |
| B. | petrol cracking |
| C. | diesel cracking |
| D. | diesel knocking |
| Answer» B. petrol cracking | |
| 18. |
What are the best anti knocking reagents of petrol? |
| A. | straight chain alkanes |
| B. | straight chain alkenes |
| C. | alkynes |
| D. | aromatics |
| Answer» E. | |
| 19. |
To improve anti knock of diesel _____ are added. |
| A. | TEL |
| B. | Pre-ignition dopes |
| C. | Di ethyl telluride |
| D. | N-hexa decane |
| Answer» C. Di ethyl telluride | |
| 20. |
Which of the following element has 100% anti knocking? |
| A. | 2-methyl naphthalene |
| B. | heptadecane |
| C. | CH<sub>3</sub>-(-CH<sub>2</sub>-)<sub>14</sub>-CH<sub>3</sub> |
| D. | 3-methyl naphthalene |
| Answer» D. 3-methyl naphthalene | |
| 21. |
Octane number is a rating of _______ |
| A. | petrol knocking |
| B. | diesel knocking |
| C. | petrol cracking |
| D. | diesel cracking |
| Answer» B. diesel knocking | |