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. |
What is the total number of electrons in the Chlorine molecule? |
| A. | 17 |
| B. | 34 |
| C. | 18 |
| D. | 16 |
| Answer» C. 18 | |
| 2. |
H2, N2, O2 and Li2 are ______________ |
| A. | heteronuclear diatomic molecules |
| B. | heteronuclear triatomic molecules |
| C. | homonuclear diatomic molecules |
| D. | homonuclear triatomic molecules |
| Answer» D. homonuclear triatomic molecules | |
| 3. |
Which of the following is true regarding nitrogen molecule. |
| A. | Diamagnetic |
| B. | Paramagnetic |
| C. | Bond order is 2 |
| D. | Total number of electrons in the molecule is 13 |
| Answer» B. Paramagnetic | |
| 4. |
The electronic configurations of molecules change when the number of electrons is ________ |
| A. | 10 |
| B. | 20 |
| C. | 17 |
| D. | 14 |
| Answer» E. | |
| 5. |
O2 is paramagnetic in nature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
What is the electronic configuration of the carbon atom? |
| A. | 1s<sup>2</sup>2s<sup>2</sup>2p<sup>2</sup> |
| B. | 1s<sup>2</sup> *1s<sup>2</sup> 2s<sup>2</sup> *2s<sup>2</sup> 2p<sub>x</sub><sup>2</sup> 2p<sub>y</sub><sup>2</sup> |
| C. | 1s<sup>2</sup>2s<sup>2</sup>2p<sup>1</sup> |
| D. | 1s<sup>2</sup> *1s 2s<sup>2</sup> 2p<sub>x</sub><sup>2</sup> 2p<sub>y</sub><sup>2</sup> |
| Answer» B. 1s<sup>2</sup> *1s<sup>2</sup> 2s<sup>2</sup> *2s<sup>2</sup> 2p<sub>x</sub><sup>2</sup> 2p<sub>y</sub><sup>2</sup> | |
| 7. |
The number of electrons in bonding orbital and anti-bonding orbital of Lithium molecule are ______ and _______ respectively. |
| A. | 4, 4 |
| B. | 2, 2 |
| C. | 2, 4 |
| D. | 4, 2 |
| Answer» E. | |
| 8. |
Which of the following molecule doesn t exist? |
| A. | O<sub>2</sub> |
| B. | H<sub>2</sub> |
| C. | He<sub>2</sub> |
| D. | N<sub>2</sub> |
| Answer» C. He<sub>2</sub> | |
| 9. |
What is the condition, for a molecule do not exist? |
| A. | N<sub>A</sub> = N<sub>B</sub> |
| B. | N<sub>A</sub> > N<sub>B</sub> |
| C. | N<sub>A</sub> < N<sub>B</sub> |
| D. | N<sub>A</sub> >/< N<sub>B</sub> |
| Answer» B. N<sub>A</sub> > N<sub>B</sub> | |
| 10. |
What is the electronic configuration of hydrogen molecule? |
| A. | 1s<sup>2</sup> |
| B. | 1s<sup>1</sup> |
| C. | 1s |
| D. | *1s |
| Answer» B. 1s<sup>1</sup> | |