MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Rocket Propulsion knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Theoretical specific impulse of 90% H2O2 is _______ |
| A. | 204 s |
| B. | 154 s |
| C. | 321 s |
| D. | 114 s |
| Answer» C. 321 s | |
| 2. |
Which of the following is not a catalyst used for H2O2 decomposition? |
| A. | Platinum |
| B. | Iron oxide |
| C. | Manganese dioxide |
| D. | Aluminium |
| Answer» E. | |
| 3. |
In the combustion chamber, hydrogen peroxide decomposes to give __________ |
| A. | hydrogen and oxygen |
| B. | hydrogen and water |
| C. | oxygen and water |
| D. | water |
| Answer» D. water | |
| 4. |
Which of the following percentages of concentration of hydrogen peroxide is used for rocket applications? |
| A. | 80 % |
| B. | 60 % |
| C. | 30 % |
| D. | 10 % |
| Answer» B. 60 % | |
| 5. |
When are the tanks with cryogenic propellants pressurized? |
| A. | Just before the engine start |
| B. | After the engine start |
| C. | 10 sec after the engine start |
| D. | 10 sec before the engine start |
| Answer» B. After the engine start | |
| 6. |
What is the decrease in specific gravity of LOX if the tank pressure is increased from atmospheric pressure to 8 atm? (At 8 atm, specific gravity of LOX is 0.88) |
| A. | 32.3% |
| B. | 28.2 % |
| C. | 22.8% |
| D. | 25.3% |
| Answer» D. 25.3% | |
| 7. |
Which of the following is the specific gravity and heat of vaporization of LOX at atmospheric pressure? |
| A. | 1.14; 213 kJ/kg |
| B. | 1.08; 253 kJ/kg |
| C. | 1.80; 235 kJ/kg |
| D. | 1.41; 231 kJ/kg |
| Answer» B. 1.08; 253 kJ/kg | |
| 8. |
LOX boils at _______ atmospheric pressure. |
| A. | 909C |
| B. | 90 K |
| C. | 90 F |
| D. | 90 R |
| Answer» C. 90 F | |
| 9. |
___________ is a commonly used liquid oxidizer. |
| A. | ClF3 |
| B. | OF2 |
| C. | ClF5 |
| D. | H2O2 |
| Answer» E. | |
| 10. |
__________ are not liquid oxidizers. |
| A. | Nitrogen-fluorine formulations |
| B. | Oxygen-fluorine compounds |
| C. | Fluorinated hydrocarbons |
| D. | Borohydrides |
| Answer» E. | |