MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following noble gases does not form clathrates? |
| A. | Argon |
| B. | Xenon |
| C. | Krypton |
| D. | Helium |
| Answer» E. | |
| 2. |
Which of the following noble gases can diffuse through rubber? |
| A. | Helium |
| B. | Xenon |
| C. | Argon |
| D. | Krypton |
| Answer» B. Xenon | |
| 3. |
Which of the following noble gases is most soluble in water? |
| A. | Helium |
| B. | Radon |
| C. | Krypton |
| D. | Neon |
| Answer» C. Krypton | |
| 4. |
What is the boiling point of Helium? |
| A. | 7.8 K |
| B. | 0 K |
| C. | 4.2 K |
| D. | 3.7 K |
| Answer» D. 3.7 K | |
| 5. |
What is the electron gain enthalpy for noble gases? |
| A. | > 0 |
| B. | < 0 |
| C. | = 0 |
| D. | It is not defined for noble gases |
| Answer» B. < 0 | |
| 6. |
What is the ratio of the molar heat at constant pressure to the molar heat at constant volume for a noble gas? |
| A. | 1.5 |
| B. | 1.67 |
| C. | 1.73 |
| D. | 1.37 |
| Answer» C. 1.73 | |
| 7. |
Which of the following statements is incorrect about noble gases? |
| A. | They are monoatomic |
| B. | They are colourless |
| C. | They are odourless |
| D. | They all have an outer electronic configuration of ns<sup>2</sup>np<sup>6</sup> |
| Answer» E. | |
| 8. |
Which of the following noble gases is not obtained via fractional distillation? |
| A. | Krypton |
| B. | Argon |
| C. | Neon |
| D. | Helium |
| Answer» E. | |
| 9. |
What are the decay products of radium? |
| A. | Radon and oxygen |
| B. | Radon and nitrogen |
| C. | Lanthanum and oxygen |
| D. | Radon and Helium |
| Answer» E. | |
| 10. |
What is the half-life of radon? |
| A. | 10 days |
| B. | 4.56 days |
| C. | 3.82 days |
| D. | 5.46 days |
| Answer» D. 5.46 days | |
| 11. |
Which of the following scientists first discovered helium in the solar spectrum during a total solar eclipse? |
| A. | Lord Rayleigh |
| B. | J N Lockyer |
| C. | William Ramsay |
| D. | Antoine Lavoisier |
| Answer» C. William Ramsay | |
| 12. |
The main commercial source of helium is natural gas. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following is the second most abundant noble gas in the atmosphere? |
| A. | Helium |
| B. | Argon |
| C. | Neon |
| D. | Krypton |
| Answer» D. Krypton | |
| 14. |
Which of the following noble gases do not occur in the elemental state in the atmosphere? |
| A. | Helium |
| B. | Neon |
| C. | Argon |
| D. | Radon |
| Answer» E. | |
| 15. |
Helium is the second most abundant gas in the universe. |
| A. | True |
| B. | False |
| Answer» B. False | |