MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
The number of molecules in a conduction band ___________ |
| A. | Increases with fall in temperature |
| B. | Decreases with a rise in temperature |
| C. | Increases with a rise in temperature |
| D. | Does not depend upon the temperature |
| Answer» D. Does not depend upon the temperature | |
| 2. |
In water, non-polar molecules tend to aggregate because they are forced to come into close proximity with each other due to ___________ |
| A. | Hydrophobic interactions |
| B. | Hydrophilic interactions |
| C. | Vander Waals interactions |
| D. | Electrovalent interactions |
| Answer» B. Hydrophilic interactions | |
| 3. |
The process by which individual molecules form the defined aggregate is called ___________ |
| A. | Self-aggregation |
| B. | Self-assembly |
| C. | Aggregation |
| D. | Assembly |
| Answer» C. Aggregation | |
| 4. |
The main cause of molecular aggregation is ___________ |
| A. | Conduction |
| B. | Induction |
| C. | Inter-molecular interactions |
| D. | Resonance |
| Answer» D. Resonance | |
| 5. |
The number of molecules in a conduction band |
| A. | Increases with fall in temperature |
| B. | Decreases with a rise in temperature |
| C. | Increases with a rise in temperature |
| D. | Does not depend upon the temperature |
| Answer» D. Does not depend upon the temperature | |
| 6. |
Why metallic bonds are non-directional? |
| A. | Because there is a uniform distribution of mobile valence electrons around the kernels |
| B. | Because there is a non-uniform distribution of mobile valence electrons around the kernels |
| C. | There is no change in inter-kernel distance |
| D. | There is a change in inter-kernel distance |
| Answer» B. Because there is a non-uniform distribution of mobile valence electrons around the kernels | |
| 7. |
Which type of molecules forms aggregate through a self-assembly process that is driven by the hydrophobic effect? |
| A. | Electrophilic |
| B. | Nucleophilic |
| C. | Ambiphilic |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
In water, non-polar molecules tend to aggregate because they are forced to come into close proximity with each other due to |
| A. | Hydrophobic interactions |
| B. | Hydrophilic interactions |
| C. | Vander Waals interactions |
| D. | Electrovalent interactions |
| Answer» B. Hydrophilic interactions | |
| 9. |
The process by which individual molecules form the defined aggregate is called |
| A. | Self-aggregation |
| B. | Self-assembly |
| C. | Aggregation |
| D. | Assembly |
| Answer» C. Aggregation | |
| 10. |
Which of the following is not a state of aggregation of matter? |
| A. | Solid |
| B. | Liquid and Gas |
| C. | Plasma |
| D. | None of the mentioned |
| Answer» E. | |
| 11. |
From where does the inter-molecular interaction originate? |
| A. | From the electric properties of atoms |
| B. | From the cohesive properties of atoms |
| C. | From the magnetic properties of atoms |
| D. | None of the mentioned |
| Answer» B. From the cohesive properties of atoms | |
| 12. |
The main cause of molecular aggregation is |
| A. | Conduction |
| B. | Induction |
| C. | Inter-molecular interactions |
| D. | Resonance |
| Answer» D. Resonance | |