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Q.

On a table some water at 0°C is taken in a container and it is enclosed under another big glass container as shown. The air present in the enclosure is removed by using a vacuum pump and vacuum is created, then

Question Image

(i) Evaporation of water will take place due to decreasing pressure

(ii) Some amount of water at 0°C will freeze and form as ice

(iii) Evaporation stops further as ice formed covers the surface of water

(iv) In this activity we can observe vaporization and freezing

Choose the correct option

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a

All are correct

b

(i), (ii), (iii) are correct

c

(ii), (iii), (iv) are correct

d

(i), (ii), (iv) are correct

answer is A.

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Detailed Solution

As pressure is decreased we get

(i) Evaporation of water will take place due to decreasing pressure

(ii) Some amount of water at 0°C will freeze and form as ice

(iii) Evaporation stops further as ice formed covers the surface of water

(iv) In this activity we can observe vaporization and freezing

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