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Chapter-4 - 11th - Liquids and Solids Preparation Multiple Questions and Answers.
| 26. | Steam causes more severe burn than the boiling water because it possesses. | ||
| A. | Latent heat of fusion | ||
| B. | Latent heat of vaporization | ||
| C. | Latent heat of sublimation | ||
| D. | All of the above | ||
| 27. | Water has a maximum density at | ||
| A. | 0�C | ||
| B. | 2�C | ||
| C. | 4�C | ||
| D. | 100�C | ||
| 28. | The conversion of vapours back into their liquid state is called | ||
| A. | Crystallization | ||
| B. | Vaporization | ||
| C. | Vaporization | ||
| D. | Condensation | ||
| 29. | Formation of vapours from the surface of a liquid is called | ||
| A. | Vapourization | ||
| B. | Evaporation | ||
| C. | Condensation | ||
| D. | Cracking | ||
| 30. | When water freezes at 0�C its density decreases due to | ||
| A. | Change of bond angles | ||
| B. | Cubic structure of ice | ||
| C. | Empty space present in the structure of ice | ||
| D. | Change of bond length | ||
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