| Direction: In the following questions, you have several brief passages with some questions following each passage. Read the passages carefully and choose the best answer to each question out of the four alternatives. |
| Passage III |
| Just because there is no atmosphere on the moon there can be no seas, rivers or water of any kind. We are accustomed to think of water as a liquid which does not boil away until it reaches a temperature of 212, but if ever we picnic high up on a mountain, we find out our mistake. We soon discover that water boils more easily and at a lower temperature there than on the plain below. The reason is that there is less weight of air to keep the molecules of the liquid pressed down and so prevent them flying off by evaporation. If there were no air-pressure at all, the water would evaporate no matter how low its temperature and this is precisely what would happen on the moon. |
A) it is boiled at a low flame
B) the temperature is very low
C) the kitchen is air conditioned
D) there is adequate air pressure
Correct Answer: B
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