| 31. | Ammonia has molar heat of vaporization, whose value in kJ/mole is |
| a. | 21.7 |
| b. | 99 |
| c. | 78 |
| d. | 71 |
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Answer: (a).21.7
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| 32. | 95.5 degree Celsius is a transition temperature for |
| a. | tin |
| b. | Sulphur |
| c. | sodium |
| d. | glucose |
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Answer: (b).Sulphur
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| 33. | Electrical properties of solid iodine include that it is |
| a. | non conductor |
| b. | conductor |
| c. | poor conductor |
| d. | moderate conductor |
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Answer: (c).poor conductor
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| 34. | Usually covalent crystals have |
| a. | one dimension |
| b. | two dimension |
| c. | three dimension |
| d. | five dimension |
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Answer: (c).three dimension
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| 35. | Liquid crystals in electrical circuits can be used to determine |
| a. | gases |
| b. | temperature failure |
| c. | potential failure |
| d. | gas failure |
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Answer: (c).potential failure
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