MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the allotrope of phosphorus in which P-atom completes its octet? |
| A. | Alpha-black phosphorus |
| B. | Beta-black phosphorus |
| C. | White phosphorus |
| D. | Red phosphorus |
| Answer» D. Red phosphorus | |
| 2. |
Which allotrope of phosphorus is also called yellow phosphorus? |
| A. | Black phosphorus |
| B. | Red phosphorus |
| C. | Beta- black phosphorus |
| D. | White phosphorus |
| Answer» E. | |
| 3. |
White phosphorus can be reconverted to red phosphorus. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which allotrope of phosphorus does not catch fire easily? |
| A. | White phosphorus |
| B. | Alpha- black phosphorus |
| C. | Beta- black phosphorus |
| D. | Red phosphorus |
| Answer» E. | |
| 5. |
Like white phosphorus, which phosphorus also exists as P4? |
| A. | Black phosphorus |
| B. | Red phosphorus |
| C. | Phosphine |
| D. | Beta-black phosphorus |
| Answer» C. Phosphine | |
| 6. |
Beta-black phosphorus is prepared by heating white phosphorus. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
From which type of phosphorus is alpha -black phosphorus formed? |
| A. | Phosphide |
| B. | White phosphorus |
| C. | Black phosphorus |
| D. | Red phosphorus |
| Answer» E. | |
| 8. |
Red phosphorus is kept under water to protect it from air. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Which allotrope of phosphorus is the most reactive? |
| A. | White phosphorus |
| B. | Metal phosphorus |
| C. | Red phosphorus |
| D. | Beta-black phosphorus |
| Answer» B. Metal phosphorus | |
| 10. |
Which allotrope of phosphorus is the most stable? |
| A. | White phosphorus |
| B. | Red phosphorus |
| C. | Black phosphorus |
| D. | Phosphine |
| Answer» D. Phosphine | |