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. |
What is the appropriate relation between the reactions of gases and solids? |
| A. | tGases react slower than the solids |
| B. | tGases react faster than the solids |
| C. | tGases do not react at all while solids react faster |
| D. | tBoth gases and solid reacts at a same rate |
| Answer» C. tGases do not react at all while solids react faster | |
| 2. |
What will be the product formation when Metallic niobium and silica, SiO2 are heated under vacuum at 1100oC? |
| A. | tNb<sub>5</sub>Si<sub>3</sub> |
| B. | tNb<sub>3</sub>Si<sub>5</sub> |
| C. | tNb<sub>2</sub>Si<sub>3</sub> |
| D. | tNo product |
| Answer» E. | |
| 3. |
During the preparation of aluminium sulphide, Al2S3 what is the reaction rate at which aluminium and sulphur react together at 800oC? |
| A. | tReact very slowly |
| B. | tReact rapidly |
| C. | tReacts and reaches equilibrium |
| D. | tDoesn t react |
| Answer» B. tReact rapidly | |
| 4. |
During the preparation of Ca2SnO4, Cao and SnO2 react slowly according to the equation
|
| A. | nThus, in the presence of CO, the reaction may be greatly ______________ |
| B. | tSpeeded up |
| C. | tSlowed down |
| D. | tAffected but speed remains the same |
| E. | tUnaffected |
| Answer» B. tSpeeded up | |
| 5. |
An elegant variation of Van Arkel purification method is to transport two substances in__________ |
| A. | tSame direction along the temperature gradient |
| B. | tOpposite direction along the temperature gradient |
| C. | tSame direction along the concentration gradient |
| D. | tOpposite direction along the concentration gradient |
| Answer» C. tSame direction along the concentration gradient | |
| 6. |
Which method is used for the purification of certain metals which uses metal and iodine to form a gaseous iodide? |
| A. | tVan Arkel method |
| B. | tZone refining |
| C. | tElectrolysis |
| D. | tDistillation |
| Answer» B. tZone refining | |
| 7. |
Which of the following is the type of reaction for the formation of gaseous PtO2 at 1200oC or higher? |
| A. | tExothermic reaction |
| B. | tEndothermic reaction |
| C. | tBoth exothermic and endothermic reaction |
| D. | tNeither exothermic nor endothermic reaction |
| Answer» C. tBoth exothermic and endothermic reaction | |
| 8. |
What is the transition temperature region required during the preparation of glass-ceramic material, lithium disilicate in oC? |
| A. | t-25 to 0 |
| B. | t0 to 25 |
| C. | t25 100 |
| D. | t300 to 500 |
| Answer» E. | |
| 9. |
Lithium disilicate Li2Si2O5, can be called which of the following materials? |
| A. | tGlass-ceramic |
| B. | tMetal-organic |
| C. | tMelts |
| D. | tMetal-inorganic |
| Answer» B. tMetal-organic | |
| 10. |
Crystallization of melts is a valuable method for which of the following number of crystals? |
| A. | tSingle |
| B. | tDouble |
| C. | tTriple |
| D. | tPolycrystals(more than 3) |
| Answer» B. tDouble | |
| 11. |
Crystallization of melts is very similar to crystallization of solutions, what is the factor that differentiates the crystallization of melt and solutions? |
| A. | tSize of the particles |
| B. | tEnvironmental factors |
| C. | tTemperature |
| D. | tEntropy |
| Answer» D. tEntropy | |
| 12. |
What are the starting materials for zeolite synthesis? |
| A. | tAqueous solution of silicate and aluminate cations |
| B. | tAqueous solution of silicate and aluminate anions |
| C. | tPowdered silicon and aluminium metal |
| D. | tNon-nano silicon and aluminium metal |
| Answer» C. tPowdered silicon and aluminium metal | |
| 13. |
What are molecular sieve zeolites? |
| A. | tAluminosilicate framework structures |
| B. | tAromatic hydrocarbons |
| C. | tAliphatic hydrocarbons |
| D. | tSilicate structures |
| Answer» B. tAromatic hydrocarbons | |
| 14. |
What is the range of temperature for the crystallization process in C? |
| A. | t1000-1500 |
| B. | t2000-3000 |
| C. | t25-100 |
| D. | t0-25 |
| Answer» D. t0-25 | |
| 15. |
What are the starting materials for crystallization? |
| A. | tGas, aqueous solution, foam |
| B. | tLiquid, aqueous solution, emulsion |
| C. | tSolid, gas, melt, solid aerosol |
| D. | tAqueous solution, melt, glass or gel |
| Answer» E. | |