MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following compound releases heat when dissolved in water? |
| A. | Barium chloride |
| B. | Ammonium chloride |
| C. | Lead chloride |
| D. | Calcium chloride |
| Answer» E. | |
| 2. |
What characteristic of water accounts for its unique properties as a solvent? |
| A. | Flexible |
| B. | Cohesive |
| C. | Polar |
| D. | Low viscosity |
| Answer» D. Low viscosity | |
| 3. |
What is the molar solubility product for V3(PO4)5 in terms of KSP? |
| A. | S = (KSP/84375)1/8 |
| B. | S = KSP1/8 |
| C. | S = (KSP/15)1/8 |
| D. | S = (KSP/108)1/8 |
| Answer» B. S = KSP1/8 | |
| 4. |
What is the solubility product expression for silver chromate dissolving in water? |
| A. | [2Ag+][2CrO42-] |
| B. | [Ag+]2 [Cr2O72-]2 |
| C. | [Ag+]2 [Cr2O42-]2 |
| D. | [Ag+]2 [CrO42-]2 |
| Answer» E. | |
| 5. |
At NTP, the solubility of natural gas in water is 0.8 mole of gas/kg of water. What is the Henry’s law constant for natural gas? |
| A. | 8 kN/m2 |
| B. | 7.90 x 10-3 Pa |
| C. | 71.36 bar |
| D. | 105 mmHg |
| Answer» D. 105 mmHg | |
| 6. |
What is the substance, present in a larger quantity that tends to establish homogenous bonds with a foreign substance, introduced in smaller quantity? |
| A. | Solute |
| B. | Element |
| C. | Solvent |
| D. | Compound |
| Answer» C. Solvent | |
| 7. |
What is the concentration of N2 in a fresh water stream in equilibrium with air at 298 K and 1 atmosphere? Given the value of KH for N2 = 0.00060 mole/kgbar. |
| A. | 0.0474 g/kg |
| B. | 0.0005 g/kg |
| C. | 1316.7 g/kg |
| D. | 13.3 g/kg |
| Answer» E. | |
| 8. |
Which of the following best describes the difficulty in breathing as one climbs to higher altitudes? |
| A. | Henry’s law |
| B. | Raoult’s law |
| C. | Osmotic pressure |
| D. | Relative lowering of atmospheric pressure |
| Answer» B. Raoult’s law | |
| 9. |
If, at 298 K water is the solvent, and Henry’s law constant for CO2 is 1.67 kbar and the constant of argon is 40.3 kbar, which of the following statements is true? |
| A. | Argon is more soluble than CO2 |
| B. | Argon is less soluble than CO2 |
| C. | Argon is insoluble in water |
| D. | Argon and CO2 are equally soluble |
| Answer» C. Argon is insoluble in water | |
| 10. |
When CO2 is introduced into aerated drinks and sealed, what is the nature of the graph between partial pressure of CO2 and its concentration in the drink? |
| A. | Exponentially increasing |
| B. | Positive slope |
| C. | Negative slope |
| D. | Constant |
| Answer» C. Negative slope | |
| 11. |
How does the solubility of gas change in a liquid, as described? |
| A. | Increases with decreasing pressure |
| B. | Increases with increasing temperature |
| C. | Decreases with increasing temperature |
| D. | Decreases with increasing pressure |
| Answer» D. Decreases with increasing pressure | |
| 12. |
In a saturated solution with endothermic dissolution, how does the concentration of dissolved solute change with increasing then decreasing temperature? |
| A. | Keeps increasing |
| B. | Keeps decreasing |
| C. | Increases and decreases |
| D. | Decreases and increases |
| Answer» E. | |
| 13. |
“The process of dissolution of solute in the solvent takes place even after saturation”. Is this true or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Which of the following solvents would most likely dissolve 3-Aminopropan-1-ol? |
| A. | C6H5OH |
| B. | C2H5OH |
| C. | H2O |
| D. | CH3COCH3 |
| Answer» D. CH3COCH3 | |
| 15. |
What is defined as the concentration of dissolved solute in a solvent beyond which none of it, if added to the solvent, will increase the concentration further more? |
| A. | Solubility |
| B. | Saturation point |
| C. | Solvent capacitance |
| D. | Molar equilibrium concentration |
| Answer» B. Saturation point | |