MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 oxoacid sulfur is known not to bear any acid salt? |
| A. | Sulfuric acid |
| B. | Thiosulfuric acid |
| C. | Sulfonic acid |
| D. | Dithionic acid |
| Answer» E. | |
| 2. |
What is the pH of 1mM concentrated sulfuric acid? |
| A. | 3.01 |
| B. | 2.75 |
| C. | 1.03 |
| D. | 2.00 |
| Answer» C. 1.03 | |
| 3. |
Which of the following is also referred to as Marshall s acid ? |
| A. | HO<sub>3</sub>SOOSO<sub>3</sub>H |
| B. | HO<sub>3</sub>SOSO<sub>3</sub>H |
| C. | HO<sub>3</sub>SSO<sub>3</sub>H |
| D. | HO<sub>3</sub>SSO<sub>2</sub>H |
| Answer» B. HO<sub>3</sub>SOSO<sub>3</sub>H | |
| 4. |
Which oxoacid of sulfur is commonly used for disinfecting swimming pools as well as delignification of wood? |
| A. | Sulfuric acid |
| B. | Peroxydisulfuric acid |
| C. | Sulfoxylic acid |
| D. | Peroxymonosulfuric acid |
| Answer» E. | |
| 5. |
In the 17th century, Johann Glauber first prepared sulfuric acid by burning sulfur with potassium nitrate with steam. A famous salt was then called to be Glauber s salt. Which of the following is it? |
| A. | Potassium nitrate |
| B. | Potassium sulfate |
| C. | Sodium sulfate |
| D. | Potassium hydroxide |
| Answer» D. Potassium hydroxide | |
| 6. |
Which of the following conditions is the most suitable for manufacture of sulfuric acid in contact process? |
| A. | High temperature and high pressure |
| B. | Low temperature and high pressure |
| C. | High pressure and low temperature |
| D. | Low pressure and low temperature |
| Answer» C. High pressure and low temperature | |
| 7. |
In the contact process, SO2 is passed twice through the catalytic converted. Why? |
| A. | To produce less while converting to SO<sub>3</sub> |
| B. | Since the energy and power consumed is less |
| C. | To increase the yield |
| D. | To avoid choking hazards |
| Answer» D. To avoid choking hazards | |
| 8. |
What is the basicity of oleum? |
| A. | 1 |
| B. | 7 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 9. |
What is the acidity of peroxodisulfuric acid? |
| A. | 1 |
| B. | 3 |
| C. | 4 |
| D. | Does not exist |
| Answer» E. | |
| 10. |
What is the primary product when carbon is treated with concentrated sulfuric acid? |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Carbon sulfate |
| D. | Carbon sulfide |
| Answer» B. Carbon monoxide | |
| 11. |
Why is sulfur trioxide not dissolved in water and but treated with existing sulfuric acid? |
| A. | It is not economically feasible |
| B. | Manufacturing plants cannot withstand the great pressure of dissolving sulfur trioxide in water |
| C. | Sulfur trioxide just hydrates on dissolving with no chemical bonds form |
| D. | The heat of dissolution is very high and potentially dangerous |
| Answer» E. | |
| 12. |
Which of the following is produced third in the contact process? |
| A. | Sulfur dioxide |
| B. | Sulfur trioxide |
| C. | Pyrosulfuric acid |
| D. | Sulfuric acid |
| Answer» D. Sulfuric acid | |
| 13. |
Which of the following is the most popular oxoacid of sulfur? |
| A. | Sulfurous acid |
| B. | Sulfuric acid |
| C. | Peroxodisulfuric acid |
| D. | Pyrosulfuric acid |
| Answer» C. Peroxodisulfuric acid | |
| 14. |
What class of compounds do the oxygen based compounds of sulfur represent? |
| A. | Acids |
| B. | Bases |
| C. | Neutral oxides |
| D. | Amphoteric |
| Answer» B. Bases | |