MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 6 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. |
Δx. Δp ≥ h/4π. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
An object has a mass of 6 kg and velocity of 10 m/s. The speed is measured with 5% accuracy, then find out Δx in m. |
| A. | 0.12676 x 10-34 |
| B. | 0.1566 x 10-34 |
| C. | 0.176 x 10-34 |
| D. | 0.276 x 10-34 |
| Answer» D. 0.276 x 10-34 | |
| 3. |
The uncertainty of a ball is given by 0.5A°. Then calculate the uncertainty in momentum. |
| A. | 2.055 x 10-24 kgm/s |
| B. | 1.015 x 10-24 kgm/s |
| C. | 1.055 x 10-24 kgm/s |
| D. | 1.095 x 10-24 kgm/s |
| Answer» D. 1.095 x 10-24 kgm/s | |
| 4. |
As per Heisenberg’s principle of uncertainty, the relation between relative momentum and relative position is __________ |
| A. | independent |
| B. | equal |
| C. | directly proportional |
| D. | inversely proportional |
| Answer» E. | |
| 5. |
Mass of a photon is given by 3.313 x 10-34 kg. Find it’s wavelength. |
| A. | 0.67A° |
| B. | 0.67nm |
| C. | 0.37A° |
| D. | 1.67A° |
| Answer» B. 0.67nm | |
| 6. |
A ball of mass 0.5kg is moving with velocity 6.626 m/s. What’s the wavelength of that ball? |
| A. | 1 x 10-34 m |
| B. | 2 x 10-34 m |
| C. | 2 x 10-32 m |
| D. | 2 x 10-3 m |
| Answer» C. 2 x 10-32 m | |