MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If elements with principal quantum number n > 4 were not allowed in nature, then what will be the number of possible elements? |
| A. | 60 |
| B. | 20 |
| C. | 4 |
| D. | 64 |
| Answer» B. 20 | |
| 2. |
β-rays emitted from radioactive material are known as electromagnetic radiation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
When a radioactive substance emits an α-particle, its position in the periodic table is lowered by which of the following? |
| A. | One place |
| B. | Two places |
| C. | Three places |
| D. | Four places |
| Answer» C. Three places | |