MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
At what temperature does the water molecules contract? |
| A. | At 0<sup>0</sup>C |
| B. | Below 0<sup>0</sup>C |
| C. | At 4<sup>0</sup>C |
| D. | Between 0<sup>0</sup>C and 4<sup>0</sup>C |
| Answer» E. | |
| 2. |
Which of the following possess lowest energy? |
| A. | NO |
| B. | O<sub>2</sub> |
| C. | N<sub>2</sub> |
| D. | CO |
| Answer» D. CO | |
| 3. |
O-nitrophenol is more volatile than p-nitrophenol due to ___________ |
| A. | Inductive effect |
| B. | Electromeric effect |
| C. | Inter-molecular hydrogen bonding in O-nitrophenol |
| D. | Intra-molecular hydrogen bonding in O-nitrophenol |
| Answer» E. | |
| 4. |
Which of the following is the consequence of hydrogen bonding? |
| A. | Abnormal boiling point |
| B. | Solubility and Viscosity |
| C. | Azeotropic behavior |
| D. | All of the mentioned |
| Answer» E. | |
| 5. |
Which of the following is not a necessary condition for the formation of intra-molecular hydrogen bonding? |
| A. | A 5 or 6-membered ring should be formed |
| B. | The ring should be planar |
| C. | There should be minimum strain during the ring closure |
| D. | There should be maximum strain during the ring closure |
| Answer» E. | |
| 6. |
Hydrogen bonding is maximum in ___________ |
| A. | Diethyl ether |
| B. | Ethyl chloride |
| C. | Ethanol |
| D. | Triethylamine |
| Answer» D. Triethylamine | |
| 7. |
Arrange the following molecules in the order of increasing boiling point. |
| A. | I<sub>2</sub> < Br<sub>2</sub> < Cl<sub>2</sub> < F<sub>2</sub> |
| B. | F<sub>2</sub> < Cl<sub>2</sub> < Br<sub>2</sub> < I<sub>2</sub> |
| C. | F<sub>2</sub> < Br<sub>2</sub> < Cl<sub>2</sub> < I<sub>2</sub> |
| D. | Cl<sub>2</sub> < F<sub>2</sub> < I<sub>2</sub> < Br<sub>2</sub> |
| Answer» C. F<sub>2</sub> < Br<sub>2</sub> < Cl<sub>2</sub> < I<sub>2</sub> | |
| 8. |
The strength of Vander Waals forces depends upon ___________ |
| A. | Size of the molecule |
| B. | Molecular structure |
| C. | Number of electrons present in the molecule |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
Which of the following has the highest bond dissociation energy? |
| A. | Covalent bond |
| B. | Vander Waals forces |
| C. | Dipole-dipole |
| D. | Hydrogen bond |
| Answer» B. Vander Waals forces | |
| 10. |
Which of the following is a microscopic property? |
| A. | Reactivity |
| B. | Inter-molecular force |
| C. | Boiling point |
| D. | Kinetic energy |
| Answer» C. Boiling point | |