MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following molecules is diamagnetic? |
| A. | O<sub>2</sub> |
| B. | CO |
| C. | (N_2^+ ) |
| D. | NO |
| Answer» C. (N_2^+ ) | |
| 2. |
Which of the following is the correct order for bonding energies of molecular orbitals? |
| A. | 1s < 2s < *2s < *1s |
| B. | 1s < 2s < *1s < *2s |
| C. | 1s < *1s < 2s < *2s |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
In water, the bond angle between the H-O H-O bond is less than 109 Why? |
| A. | The H atoms attract each other |
| B. | Oxygen atom is much larger than Hydrogen atoms |
| C. | Lone pair-bond pair repulsion is greater than bond pair-bond pair repulsion |
| D. | VSEPR theory does not apply for planar molecules like water |
| Answer» D. VSEPR theory does not apply for planar molecules like water | |
| 4. |
Which of the following is a secondary bond? |
| A. | Metallic bond |
| B. | Hydrogen bond |
| C. | Covalent bond |
| D. | Ionic bond |
| Answer» C. Covalent bond | |