MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Fluid-bed catalytic cracking products contain high proportions of aromatic and iso-paraffin compounds than thermal cracking process. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
In fluid-bed catalytic cracking, cracking takes place on ___________________ |
| A. | The side walls of the turbulent |
| B. | The surface of the turbulent |
| C. | Upper portion of the turbulent |
| D. | Instruments of the turbulent |
| Answer» C. Upper portion of the turbulent | |
| 3. |
Which of the following is the main disadvantage of hydrogenation cracking? |
| A. | It cannot achieve complete cracking |
| B. | It creates holes in the reactor |
| C. | It is expensive and intricate |
| D. | It requires more human effort |
| Answer» D. It requires more human effort | |
| 4. |
Which type of raw materials are formed from the light gases produced by cracking? |
| A. | Synthetic rubber |
| B. | Freezing agents |
| C. | Acids |
| D. | Inorganic compounds |
| Answer» B. Freezing agents | |
| 5. |
What happens in the stabilizer of fixed-bed catalytic cracking? |
| A. | Coke is obtained in it |
| B. | Coal gas is formed in it |
| C. | Butane is formed |
| D. | Gasoline is recovered |
| Answer» E. | |
| 6. |
What happens to the heavy gas oil fractions in the cracking process? |
| A. | It escapes out |
| B. | Condensed at the bottom of the column |
| C. | It gets dissolved in the solution |
| D. | It blocks the air holes |
| Answer» C. It gets dissolved in the solution | |
| 7. |
How much percentile of low molecular weight hydrocarbons are formed in fixed-bed catalytic cracking? |
| A. | 15-20 % |
| B. | 50-60 % |
| C. | 30-40 % |
| D. | 0-5 % |
| Answer» D. 0-5 % | |
| 8. |
At what temperature does the oil is vaporised and heated in fixed-bed cracking process? |
| A. | 400-500<sup>o</sup>C |
| B. | 700-800 <sup>o</sup>C |
| C. | 100-200 <sup>o</sup>C |
| D. | More than 1000 <sup>o</sup>C |
| Answer» B. 700-800 <sup>o</sup>C | |
| 9. |
In which process does the oil vapours are heated to their cracking temperatures? |
| A. | Thermal cracking |
| B. | Fixed-bed cracking |
| C. | Fluid-bed cracking |
| D. | Coking |
| Answer» C. Fluid-bed cracking | |
| 10. |
In which form does the catalyst are used in fluid-bed cracking? |
| A. | In the form of oxides |
| B. | In the form of vapours |
| C. | Liquid form |
| D. | In the form of fine powder |
| Answer» E. | |
| 11. |
Which compounds can be obtained from higher percentile yields of butyne-butylene fractions? |
| A. | Gasoline |
| B. | Coke |
| C. | Super-Gasoline |
| D. | Diesel |
| Answer» D. Diesel | |
| 12. |
Catalytic cracking process are more expensive to run than the thermal cracking process. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
What happens when the crude petroleum fractions are made in contact of catalyst in cracking process? |
| A. | Solid substances are obtained |
| B. | Liquid substances are obtained |
| C. | Gaseous substances are obtained |
| D. | Solid, liquid and gaseous substances are obtained |
| Answer» E. | |
| 14. |
How can we regenerate alumina-silica catalyst? |
| A. | By increasing the particles of coke on the catalyst |
| B. | By increasing the amount of catalyst |
| C. | By decreasing the particles of coke on the catalyst |
| D. | By making it react with suitable anion or cation |
| Answer» D. By making it react with suitable anion or cation | |
| 15. |
How can we increase the ageing of alumina-silica catalyst? |
| A. | By making the contact of catalyst with heavy metals |
| B. | By making the contact of catalyst with lighter metals |
| C. | By making the contact of catalyst with heavy non-metals |
| D. | By making the contact of catalyst with lighter non-metals |
| Answer» C. By making the contact of catalyst with heavy non-metals | |