MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What percentage of Earth’s mass is sulfur? |
| A. | 3% |
| B. | 5% |
| C. | 0.032% |
| D. | 2% |
| Answer» B. 5% | |
| 2. |
What is the common name of O2SCl2? |
| A. | Sulfur oxochloride |
| B. | Sulfuryl dioxo-dichloride |
| C. | Sulfuryl chloride |
| D. | Thionyl chloride |
| Answer» D. Thionyl chloride | |
| 3. |
When a flask containing sodium thiosulfate is placed over a paper marked with ‘X’ and HCl added to it, the ‘X’ seems to disappear when looked through the flask. Why? |
| A. | Because of formation of sodium chloride |
| B. | Because of sulfur precipitating |
| C. | Because of release of yellowish chlorine gas |
| D. | Because of dissolution of sulfur |
| Answer» C. Because of release of yellowish chlorine gas | |
| 4. |
What are pyrites known as fool’s good? |
| A. | Because of sulfides |
| B. | Because of lead |
| C. | Because of carbonates |
| D. | Because of iron |
| Answer» B. Because of lead | |