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The following diagrams illustrate three situations involving thermometers which are labeled A, Band C. In each situation the thermometers indicate different readings.
(i) What do you expect the approximate reading of the thermometer B and C would be? Give a reason for your answer.
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Study the following diagrams and write down your observations.

What will be the approximate temperature of water in the lake shown in the following diagram?

(i) At X, and
(ii) At Y?
Observe the given graph and answer the following questions:

- Name the process represented in the figure.
- At what temperature does this process take place?
Observe the given picture and answer the following questions.

- Which property do you understand in this picture?
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- What is the temperature below the layer of ice on the surface?
