McqMate
| Q. |
Which of the following is not a chemical reaction'? |
| A. | Burning of paper |
| B. | Digestion of food |
| C. | Conversion of water into steam |
| D. | Burning of coal |
| Answer» C. Conversion of water into steam | |
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Explanation: The conversion of water into steam is an example of a physical change. where the state of the matter changes without changing its composition. A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density. |
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