MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 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 conductivity of micelles is ___________ |
| A. | Higher than a colloidal solution |
| B. | Lower than a colloidal solution |
| C. | Equals to colloidal solution |
| D. | None of the mentioned |
| Answer» B. Lower than a colloidal solution | |
| 2. |
Micelles behave as colloids only when? |
| A. | Concentration is less than CMC |
| B. | Concentration is equal to CMC |
| C. | Concentration is greater than CMC |
| D. | They always behave as colloids |
| Answer» D. They always behave as colloids | |
| 3. |
The transition of ions to micelle is ___________ |
| A. | Reversible |
| B. | Irreversible |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. Irreversible | |
| 4. |
Select the correct statement from the following options. |
| A. | The soap micelle is unstable due to positive charge on its head |
| B. | The soap micelle is stable due to positive charge on its head |
| C. | The soap micelle is unstable due to negative charge on its head |
| D. | The soap micelle is stable due to negative charge on its head |
| Answer» E. | |
| 5. |
The number of stearate ions required to form a micelle of colloidal size is ___________ |
| A. | 50 |
| B. | 60 |
| C. | 70 |
| D. | 80 |
| Answer» D. 80 | |
| 6. |
MICELLES_BEHAVE_AS_COLLOIDS_ONLY_WHEN?$ |
| A. | Concentration is less than CMC |
| B. | Concentration is equal to CMC |
| C. | Concentration is greater than CMC |
| D. | They always behave as colloids |
| Answer» D. They always behave as colloids | |
| 7. |
The_conductivity_of_micelles_is$ |
| A. | Higher than a colloidal solution |
| B. | Lower than a colloidal solution |
| C. | Equals to colloidal solution |
| D. | None of the mentioned |
| Answer» B. Lower than a colloidal solution | |
| 8. |
What is Critical Micelle Concentration? |
| A. | The maximum amount of concentration that is required for the formation of micelle |
| B. | The minimum amount of concentration that is required for the formation of micelle |
| C. | The maximum amount of concentration that is not required for the formation of micelle |
| D. | The minimum amount of concentration that is not required for the formation of micelle |
| Answer» C. The maximum amount of concentration that is not required for the formation of micelle | |
| 9. |
The transition of ions to micelle is |
| A. | Reversible |
| B. | Irreversible |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. Irreversible | |
| 10. |
The number of stearate ions required to form a micelle of colloidal size is |
| A. | 50 |
| B. | 60 |
| C. | 70 |
| D. | 80 |
| Answer» D. 80 | |
| 11. |
Which of the following is water insoluble? |
| A. | COO<sup>–</sup> |
| B. | Na<sup>+</sup> |
| C. | C<sub>17</sub>H<sub>35</sub> |
| D. | All of the mentioned |
| Answer» C. C<sub>17</sub>H<sub>35</sub> | |
| 12. |
Which part of the stearate ion is hydrophilic in nature? |
| A. | Tail |
| B. | Hydrocarbon chain |
| C. | Head |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 13. |
What is the molecular formula of stearate ion? |
| A. | C<sub>17</sub>H<sub>35</sub>COO<sup>–</sup> |
| B. | C<sub>35</sub>H<sub>17</sub>COO<sup>+</sup> |
| C. | C<sub>35</sub>H<sub>17</sub>COO<sup>–</sup> |
| D. | C<sub>17</sub>H<sub>35</sub>COO<sup>+</sup> |
| Answer» B. C<sub>35</sub>H<sub>17</sub>COO<sup>+</sup> | |