MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Unit Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Heterocyclic Compounds undergo which type of hydrogenation? |
| A. | Partial hydrogenation |
| B. | Catalytic hydrogenation |
| C. | Selective hydrogenation |
| D. | Hydrogenolysis |
| Answer» C. Selective hydrogenation | |
| 2. |
Aldehydes are reduced more rapidly than ketones. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which is the most widely used catalyst for hydrogenation if aromatics? |
| A. | Cadmium |
| B. | Zinc |
| C. | Nickel |
| D. | Iron |
| Answer» D. Iron | |
| 4. |
Complete the following reaction: R-CC-R’ + H2 —–> _______ |
| A. | R-CH-CH-R’ |
| B. | R-CH2-CH3 |
| C. | R-CH2-CH2-R’ |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 5. |
WHICH_IS_THE_MOST_WIDELY_USED_CATALYST_FOR_HYDROGENATION_IF_AROMATICS??$ |
| A. | Cadmium |
| B. | Zinc |
| C. | Nickel |
| D. | Iron |
| Answer» D. Iron | |
| 6. |
Heterocyclic Compounds undergo which type of hydrogenation?$ |
| A. | Partial hydrogenation |
| B. | Catalytic hydrogenation |
| C. | Selective hydrogenation |
| D. | Hydrogenolysis |
| Answer» C. Selective hydrogenation | |
| 7. |
Aldehydes are reduced more rapidly than ketones.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Olefins rapidly hydrogenate at what temperature? |
| A. | Lower |
| B. | Moderate |
| C. | Higher |
| D. | None of the mentioned |
| Answer» B. Moderate | |
| 9. |
The catalytic reduction of aromatics require on Liquid phase. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Aromatic require what temperature to achieve complete hydrogenation? |
| A. | 130°C |
| B. | 150°C |
| C. | 18°C0 |
| D. | 200°C |
| Answer» D. 200¬¨¬®‚Äö√†√ªC | |
| 11. |
Diolefins undergo catalytic hydrogenation to produce which type of hydrocarbon? |
| A. | Saturated |
| B. | Unsaturated |
| C. | Aromatic |
| D. | Azo |
| Answer» B. Unsaturated | |
| 12. |
What are the properties of Polybutadiene? |
| A. | Thermoplastics |
| B. | Oil resistance |
| C. | Tensile strength |
| D. | All of the mentioned |
| Answer» E. | |
| 13. |
Fill in the blank: _____ molecular weight olefins are generally hydrogenated in the liquid phase. |
| A. | Lower |
| B. | Higher |
| C. | Moderate |
| D. | None of the mentioned |
| Answer» C. Moderate | |
| 14. |
In presence of what, the compounds undergo catalytic hydrogenation? |
| A. | Nickel |
| B. | Platinum |
| C. | Palladium |
| D. | All of the mentioned |
| Answer» E. | |
| 15. |
How is selective hydrogenation achieved? |
| A. | Heat supplied |
| B. | Catalyst used |
| C. | Reactants |
| D. | Products |
| Answer» C. Reactants | |
| 16. |
Complete the following reaction: R-CC-R’ + H2 —–> _______ |
| A. | R-CH-CH-R’ |
| B. | R-CH<sub>2</sub>-CH<sub>3</sub> |
| C. | R-CH<sub>2</sub>-CH<sub>2</sub>-R’ |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |