Gk Questions with AnswersChemistry General Knowledge Questions and Answers
| 21. | When iron is rusted, it is | ||
|---|---|---|---|
| A. Oxidized | |||
| B. Reduced | |||
| C. Evaporated | |||
| D. Decomposed | |||
| Answer | ||
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| 22. | Pyrethrin used in mosquito coil is obtain from | ||
|---|---|---|---|
| A. A seed plant | |||
| B. A fungus | |||
| C. An insect | |||
| D. A bacterium | |||
| Answer | ||
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| 23. | On heating ammonium acetate is converted into | ||
|---|---|---|---|
| A. Acetone | |||
| B. Acetaldehyde | |||
| C. Acetic acid | |||
| D. Acetamide | |||
| Answer | ||
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| 24. | The colour of ferrous hydroxide precipitate is | ||
|---|---|---|---|
| A. White | |||
| B. Blue | |||
| C. Brown | |||
| D. Dirty green | |||
| Answer | ||
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