MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
THE_FACTOR_WHICH_DETERMINES_THE_ACTIVITY_OF_A_HETEROGENEOUS_CATALYST_IS?$ |
| A. | Total surface area only |
| B. | The number of active sites per unit amount of catalyst only |
| C. | Method of preparation, prior treatment only |
| D. | Total surface area, number of active sites and method of preparation |
| Answer» E. | |
| 2. |
Which of the following process is used for the manufacturing of acetic acid? |
| A. | Bosch’s process |
| B. | Deacon’s process |
| C. | Vinegar process |
| D. | Chamber process |
| Answer» D. Chamber process | |
| 3. |
What_is_the_optimum_temperature_for_Haber’s_process? |
| A. | 450<sup>0</sup>C |
| B. | 45<sup>0</sup>C |
| C. | 150<sup>0</sup>C |
| D. | 300<sup>0</sup>C |
| Answer» B. 45<sup>0</sup>C | |
| 4. |
Which_of_the_following_process_is_used_for_the_preparation_of_sulphuric_acid? |
| A. | Ostwald’s process |
| B. | Bergius process |
| C. | Deacon’s process |
| D. | Chamber process |
| Answer» E. | |
| 5. |
Which of the following statement is incorrect about the adsorption theory? |
| A. | The catalyst is more efficient in finely divided state |
| B. | Action of promoters is not explained |
| C. | Enhanced activity of a rough surfaced catalyst is explained |
| D. | Specific action of catalyst is explained |
| Answer» C. Enhanced activity of a rough surfaced catalyst is explained | |
| 6. |
Which of the following step is the rate determining step of contact theory? |
| A. | Diffusion of reactants to surface |
| B. | Adsorption of reactants at the surface |
| C. | Chemical reaction at the surface |
| D. | Desorption of products from the surface |
| Answer» D. Desorption of products from the surface | |
| 7. |
No definite intermediate compound formation takes place in contact theory. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Select the incorrect statement about the adsorption theory from the following option. |
| A. | The surface of the solid catalyst possess some isolated active centres having residual affinity |
| B. | Due to these centres, the molecules of the gaseous reactants get adsorbed in unimolecular thick layer |
| C. | The adsorbed reactants get activated and then react |
| D. | The energy required for activation is more than that required for uncatalysed reaction |
| Answer» E. | |
| 9. |
Which of the following act as catalysis for Williamson’s etherification process?$ |
| A. | HCl |
| B. | NaCl |
| C. | KMnO<sub>4</sub> |
| D. | H<sub>2</sub>SO<sub>4</sub> |
| Answer» E. | |
| 10. |
Which of the following is an example of homogeneous catalysis? |
| A. | Enzyme catalysis |
| B. | Hardening of animal and vegetable oils |
| C. | Haber’s process |
| D. | Cracking of heavy oils for a synthesis of gasoline |
| Answer» B. Hardening of animal and vegetable oils | |
| 11. |
Which of the following is not a category of catalysis? |
| A. | Homogeneous |
| B. | Heterogeneous |
| C. | Artificial |
| D. | Enzymatic |
| Answer» D. Enzymatic | |