| 16. | Habit of crystal is actually its |
| a. | color |
| b. | size |
| c. | shape |
| d. | density |
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Answer: (c).shape
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| 17. | Characteristic of covalent bonds present in metallic structure is that they are |
| a. | localized |
| b. | permanent |
| c. | temporary |
| d. | delocalized |
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Answer: (d).delocalized
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| 18. | Quantity of liquid, Molar heat of vaporization needs is |
| a. | 1 mole |
| b. | 5 mole |
| c. | 8 mole |
| d. | 10 mole |
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Answer: (a).1 mole
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| 19. | Liquid will boil at low temperature when we have |
| a. | low external pressure |
| b. | low volume |
| c. | low viscosity |
| d. | low polarization |
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Answer: (a).low external pressure
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| 20. | 218 degree Celsius boiling point at 1 atm is characteristic of |
| a. | ethanol |
| b. | alcohol |
| c. | naphthalene |
| d. | phenol |
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Answer: (c).naphthalene
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