MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why is ozone a powerful bleaching agent? |
| A. | It is highly electronegative |
| B. | Nascent oxygen |
| C. | Instability of molecule |
| D. | Large negative Gibbs energy |
| Answer» C. Instability of molecule | |
| 2. |
As ozone transitions from solid to liquid to gas, what is the notable color change? |
| A. | Pale blue to violet to deep blue |
| B. | Violet to pale blue to deep blue |
| C. | Deep blue to violet to pale blue |
| D. | Violet to deep blue to pale blue |
| Answer» E. | |
| 3. |
Which of the following methods is used to form ozone from oxygen? |
| A. | Standard electric discharge |
| B. | Silent electric discharge |
| C. | Thermal decomposition |
| D. | Heating in an atmosphere of excess oxygen |
| Answer» C. Thermal decomposition | |
| 4. |
“Ozone is a pollutant.” True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What is the chemical formula structure of ozone? |
| A. | O = O+ – O– |
| B. | O– – O = O+ |
| C. | O = O– – O+ |
| D. | O– = O+ – O |
| Answer» B. O– – O = O+ | |