MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Choose the incorrect statement from the following options. |
| A. | In bonding molecular orbital, electron density is low in the region between the nuclei of bonded atoms |
| B. | The energy of antibonding molecular orbital is higher than that of atomic orbitals from which it is formed |
| C. | Every electron in bonding molecular orbital contributes toward stability of the molecule |
| D. | Antibonding takes place when lobes of atomic orbitals have different signs |
| Answer» B. The energy of antibonding molecular orbital is higher than that of atomic orbitals from which it is formed | |
| 2. |
According to Molecular Orbital Theory, the shape and size of a molecular orbital depends upon _________ |
| A. | Shape and size of the combining atomic orbitals |
| B. | Numbers of the combining atomic orbitals |
| C. | Orientation of the combining atomic orbitals |
| D. | All of the mentioned |
| Answer» E. | |
| 3. |
The relative energies of molecular orbitals in increasing order have been found to be as follows.
|
| A. | For O<sub>2</sub> to Ne<sub>2</sub> |
| B. | For H<sub>2</sub> to N<sub>2</sub> |
| C. | For H<sub>2</sub> to Ne<sub>2</sub> |
| D. | For N<sub>2</sub> to Ne<sub>2</sub> |
| Answer» C. For H<sub>2</sub> to Ne<sub>2</sub> | |
| 4. |
Bond Order of O2, F2, N2 respectively are __________ |
| A. | +1, +2, +3 |
| B. | +2, +3, +1 |
| C. | +2, +1, +3 |
| D. | +3, +2, +1 |
| Answer» D. +3, +2, +1 | |
| 5. |
The filling of molecular orbital takes place according to __________ |
| A. | The Aufbau Principle |
| B. | Pauli Exclusion Principle |
| C. | Hund s rule of maximum multiplicity |
| D. | All of the mentioned |
| Answer» E. | |
| 6. |
If the sign of the wave function is unchanged when the orbital is reflected about its centre, the orbital is ______________ |
| A. | Gerade |
| B. | Ungerade |
| C. | Gerade as well as Ungerade |
| D. | None of the mentioned |
| Answer» B. Ungerade | |