MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Solid State Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which one of the following is high pressure polymorphs of SiO2? |
| A. | Wurtzite |
| B. | Phenacite |
| C. | Quartz |
| D. | Stishovite |
| Answer» E. | |
| 2. |
The normal graphite structure has coordination number 3, however on typical transformation u at applied pressure and temperature it becomes diamond with a coordination number of_______ |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 3. |
How does the mineralizer operate in the hydrothermal method? |
| A. | Decreasing the concentration of the solvent |
| B. | Increasing the concentration of the solvent |
| C. | Increasing the solubility of the solute |
| D. | Decreasing the solubility of the solute |
| Answer» D. Decreasing the solubility of the solute | |
| 4. |
Which of the following method is represented by the diagram given below_________ |
| A. | Bridgeman method |
| B. | Stockbarger method |
| C. | Hydrothermal method |
| D. | Zone melting method |
| Answer» D. Zone melting method | |
| 5. |
What is the critical temperature of water in ◦C? |
| A. | 0 |
| B. | 107 |
| C. | 204 |
| D. | 374 |
| Answer» E. | |
| 6. |
HOW_DOES_THE_MINERALIZER_OPERATE_IN_THE_HYDROTHERMAL_METHOD??$ |
| A. | Decreasing the concentration of the solvent |
| B. | Increasing the concentration of the solvent |
| C. | Increasing the solubility of the solute |
| D. | Decreasing the solubility of the solute |
| Answer» D. Decreasing the solubility of the solute | |
| 7. |
Which one of the following is high pressure polymorphs of SiO2?$ |
| A. | Wurtzite |
| B. | Phenacite |
| C. | Quartz |
| D. | Stishovite |
| Answer» E. | |
| 8. |
The normal graphite structure has coordination number 3, however on typical transformation u at applied pressure and temperature it becomes diamond with a coordination number of_______$ |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 9. |
What is the work of mineralizer in the hydrothermal method? |
| A. | It increases the amount of water |
| B. | It speeds up the reaction |
| C. | It increases the solubility of reaction mixture |
| D. | It helps in forming the cold seal |
| Answer» C. It increases the solubility of reaction mixture | |
| 10. |
In hydrothermal method, the bomb connected directly to an independent pressure source is known as____________ |
| A. | Hot seal |
| B. | Bomb |
| C. | Flux |
| D. | Cold seal |
| Answer» E. | |
| 11. |
What is the critical temperature of water in ‚ó¶C?$ |
| A. | 0 |
| B. | 107 |
| C. | 204 |
| D. | 374 |
| Answer» E. | |
| 12. |
Which of the following is correct for hydrothermal method. Hydrothermal method need to be carried out in________________ |
| A. | Open container |
| B. | Closed container |
| C. | In a test tube |
| D. | In conical flask |
| Answer» C. In a test tube | |
| 13. |
Hydrothermal method can be a useful technique for___________ |
| A. | Growing liquid CO<sub>2</sub> |
| B. | Growing amorphous solid |
| C. | Growing single crystals |
| D. | Growing Gaseous particles |
| Answer» D. Growing Gaseous particles | |
| 14. |
Hydrothermal methods are particularly suited for the synthesis of phases that are_________ |
| A. | Stable at lower temperature |
| B. | Unstable at lower temperature |
| C. | Stable at higher temperature |
| D. | Unstable at higher temperature |
| Answer» E. | |
| 15. |
Which of the following statements is true for hydrothermal methods? |
| A. | It uses temperature above its cooling point |
| B. | It uses temperature below its cooling point |
| C. | It uses temperature above its boiling point |
| D. | It is not at all related with the temperature |
| Answer» C. It uses temperature above its boiling point | |