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Chapter-4 - 11th - Liquids and Solids Preparation Multiple Questions and Answers.
| 21. | Hydrogen bonding is involved in | ||
| A. | Solubility | ||
| B. | Cleansing action of detergents | ||
| C. | Biological molecules | ||
| D. | All | ||
| 22. | Actually, the vapour pressure on the surface of a liquid in the flask is equal to | ||
| A. | -h | ||
| B. | Pa-Oh | ||
| C. | Pa + -h | ||
| D. | Pt = Pa-Oh | ||
| 23. | Forces of attraction which may be present between all kinds of atoms and molecules are | ||
| A. | intramolecular | ||
| B. | intermolecular | ||
| C. | van der Waal | ||
| D. | Dipole-induced dipole | ||
| 24. | The density of water may be | ||
| A. | Equal to that of ice | ||
| B. | Greater than that of ice | ||
| C. | Less than that of ice | ||
| D. | All are possible | ||
| 25. | The quantity of heat required to convert one mole of liquid into its vapors at its boiling point is called molar heat of. | ||
| A. | Vaporization | ||
| B. | Evaporation | ||
| C. | Crystallization | ||
| D. | Sublimation | ||
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