MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Before the invention of CFCs, which of the compounds was used extensively as a refrigerant? |
| A. | Ammonia |
| B. | Diethyl ether |
| C. | Sulfur dioxide |
| D. | Ice |
| Answer» D. Ice | |
| 2. |
If a aryl diazonium salt is treated with sulfur dioxide, what product forms? |
| A. | Benzene sulfonic acid |
| B. | Aryl Sulfonyl Chloride |
| C. | Thiophenol |
| D. | Thiophene |
| Answer» C. Thiophenol | |
| 3. |
Which compound is used as a reducing bleach for papers |
| A. | Sulfur trioxide |
| B. | Sulfur |
| C. | Sulfur dioxide |
| D. | Hydrogen sulfide |
| Answer» D. Hydrogen sulfide | |
| 4. |
Which of the following is not a criterion for air pollutants monitored by U.S EPA? |
| A. | Sulfur dioxide |
| B. | Ozone |
| C. | Mercury |
| D. | Lead |
| Answer» D. Lead | |
| 5. |
Which of the following is a suffocating gas produced during incomplete combustion of fuels? |
| A. | Sulfur dioxide |
| B. | Carbon monoxide |
| C. | Carbon dioxide |
| D. | Nitrogen dioxide |
| Answer» C. Carbon dioxide | |
| 6. |
What is the primary component of food preservative E220? |
| A. | Sulfur dioxide |
| B. | Sodium benzoate |
| C. | Sodium glutamate |
| D. | Potassium sorbate |
| Answer» B. Sodium benzoate | |
| 7. |
Which reagent is used in qualitative testing for presence of sulfur dioxide? |
| A. | Sodium Chloride |
| B. | Iron (II) sulfate |
| C. | Vanadium (V) oxide |
| D. | Potassium permanganate |
| Answer» E. | |
| 8. |
Which of the following is not a property of sulfur dioxide? |
| A. | Colorless |
| B. | Bent molecule |
| C. | Odorless |
| D. | Polar molecule |
| Answer» D. Polar molecule | |
| 9. |
Which of the following causes acid rain? |
| A. | Carbonic acid |
| B. | Sulfurous acid |
| C. | CFCs |
| D. | Hydrogen chloride |
| Answer» C. CFCs | |
| 10. |
What is the chemical formula of sulfur dioxide? |
| A. | SO<sub>2</sub> |
| B. | SO<sub>6</sub> |
| C. | SO<sub>3</sub> |
| D. | S<sub>2</sub>O<sub>3</sub> |
| Answer» B. SO<sub>6</sub> | |