MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Gravitational force = Gm1m2/r2. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Pick out the isobar of 18Ar40. |
| A. | 12Mg24 |
| B. | 26Fe58 |
| C. | 19K40 |
| D. | 28Ni64 |
| Answer» D. 28Ni64 | |
| 3. |
Find out the number of neutrons, protons, and electrons of 17Cl37 respectively. |
| A. | 20, 20, 17 |
| B. | 17, 17, 20 |
| C. | 20, 17, 17 |
| D. | 17, 17, 17 |
| Answer» D. 17, 17, 17 | |
| 4. |
If the number of protons and neutrons of an element is 13 and 14 respectively, then what’s the atomic number(Z) and mass number(A)? |
| A. | 13, 13 |
| B. | 13, 27 |
| C. | 14, 13 |
| D. | 27, 14 |
| Answer» C. 14, 13 | |
| 5. |
Which of the following statements you think is wrong regarding α particle scattering effect? |
| A. | α particles mostly move through the gold foil having zero deflection |
| B. | A small fraction are deflected |
| C. | One in Twenty Thousand turns 180° |
| D. | The thickness of the gold foil is about 100μm |
| Answer» E. | |