MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following molecule is not true about paramagnetic molecules? |
| A. | Attracted by the magnetic field |
| B. | A molecular orbital is singly occupied |
| C. | An example is oxygen molecule |
| D. | Repelled by the magnetic field |
| Answer» E. | |
| 2. |
What do you think is the relationship between bond order and bond length? |
| A. | Directly proportional |
| B. | Indirectly proportional |
| C. | No relation |
| D. | Cannot predict |
| Answer» C. No relation | |
| 3. |
What s the bond order of Oxygen? |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 0 |
| Answer» C. 1 | |
| 4. |
Take NA as the number of Anti-bonding molecular orbitals and NB as the number of Bonding molecular orbitals. The molecule is stable when NA ____________ NB. |
| A. | is greater than |
| B. | is equal to |
| C. | is less than |
| D. | is greater than or equal to |
| Answer» D. is greater than or equal to | |
| 5. |
Which of the bonding orbital has greater energy comparatively? |
| A. | Both Bonding molecular orbital and Anti-bonding molecular orbital have the same energy |
| B. | The energy of Bonding molecular orbital and Anti-bonding molecular orbital depends on the situation |
| C. | Bonding molecular orbital |
| D. | Anti-bonding molecular orbital |
| Answer» E. | |
| 6. |
Sigma molecular orbitals are not symmetrical around the bonding axis. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following is a condition for the combination of atomic orbitals? |
| A. | Combining atomic orbitals need not have equal energy |
| B. | Combining atomic orbitals must have symmetry as per molecular axis |
| C. | Combining atomic orbitals must overlap to a minimum extent |
| D. | For combining atomic orbitals, X-axis should be taken as a molecular axis |
| Answer» C. Combining atomic orbitals must overlap to a minimum extent | |
| 8. |
( psi )MO = ( psi )A + ( psi )B. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Stability increases, as the energy ___________ |
| A. | increases |
| B. | doesn t change |
| C. | decreases |
| D. | increases and then decreases |
| Answer» D. increases and then decreases | |
| 10. |
Combination of two atomic orbitals results in the formation of two molecular orbitals namely _________ |
| A. | one bonding and one non-bonding orbital |
| B. | two bonding orbitals |
| C. | two non-bonding orbitals |
| D. | two bonding and non-bonding orbitals |
| Answer» B. two bonding orbitals | |