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 is not a homonuclear diatomic molecule? |
| A. | H<sub>2</sub> |
| B. | N<sub>2</sub> |
| C. | O<sub>2</sub> |
| D. | HCl |
| Answer» E. | |
| 2. |
Valence bond theory explains the overlapping of atomic orbitals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
A positive overlap is same as ________ |
| A. | out-phase overlap |
| B. | negative overlap |
| C. | zero overlap |
| D. | in-phase overlap |
| Answer» E. | |
| 4. |
A __________ overlap doesn t result in the formation of a bond. |
| A. | positive |
| B. | negative |
| C. | zero |
| D. | rational |
| Answer» D. rational | |
| 5. |
A pi bond is stronger than a sigma bond. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
The pi-bond involves __________ |
| A. | axial overlapping |
| B. | side-wise overlapping |
| C. | end to end type of overlapping |
| D. | head-on overlapping |
| Answer» C. end to end type of overlapping | |
| 7. |
Which type of bond is present between hydrogens in hydrogen molecule? |
| A. | Sigma bond |
| B. | Pi bond |
| C. | Ionic bond |
| D. | Metallic bond |
| Answer» B. Pi bond | |
| 8. |
What is the electronic configuration of carbon in it s excited state? |
| A. | 1s<sup>2</sup>2s<sup>2</sup>2p<sup>4</sup> |
| B. | 1s<sup>2</sup>2s<sup>2</sup>2p<sup>3</sup> |
| C. | 1s<sup>2</sup>2s<sup>2</sup>2p<sup>5</sup> |
| D. | 1s<sup>2</sup>2s<sup>1</sup>2p<sup>4</sup> |
| Answer» C. 1s<sup>2</sup>2s<sup>2</sup>2p<sup>5</sup> | |
| 9. |
The strength of covalent ___________ extent of overlapping of orbitals. |
| A. | may be or may not be related |
| B. | is independent on |
| C. | is dependent on |
| D. | is not related to |
| Answer» D. is not related to | |
| 10. |
The bond enthalpy of ___________ molecule is 435.8 kJ mol-1. |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Helium |
| Answer» B. Oxygen | |