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| Q. |
Which one of the following is used to restore the colour of old oil-paintings? |
| A. | Ozone |
| B. | Hydrogen peroxide |
| C. | Barium peroxide |
| D. | Sodium peroxide |
| Answer» B. Hydrogen peroxide | |
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Explanation: Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen- oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid, slightly more viscous than water. In dilute solution, it appears colourless. Due to its oxidizing properties, hydrogen peroxide is often used as a bleach or cleaning agent. The oxidizing capacity of hydrogen peroxide is so strong that it is considered a highly reactive oxygen species. |
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