MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When the azimuthal quantum number (L) is 3, than m can have? |
| A. | 3 values |
| B. | 7 values |
| C. | 1 value |
| D. | 5 values |
| Answer» C. 1 value | |
| 2. |
When the electrons is brought from infinity to the ground state of the hydrogen atom, then the energy is? |
| A. | Emitted |
| B. | Depends on surrounding |
| C. | Not effected |
| D. | Absorbed |
| Answer» B. Depends on surrounding | |
| 3. |
The radius of second Bohr orbit is? |
| A. | 0.053 nm |
| B. | 0.53/4 nm |
| C. | 0.529 X 2 nm |
| D. | 0.53 X 20 nm |
| Answer» D. 0.53 X 20 nm | |
| 4. |
Balmer series lie in the ____ region of spectrum: |
| A. | Infar-infrared |
| B. | Visible |
| C. | Infrared |
| D. | Ultraviolet |
| Answer» C. Infrared | |
| 5. |
Quantum number value of 2p orbitals are? |
| A. | n = 1, L = 0 |
| B. | n = 2, L = 1 |
| C. | n = 1, L = 1 |
| D. | n = 2, L = 0 |
| Answer» C. n = 1, L = 1 | |