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ICSE Class 10 Physics Question 17 of 20

Solved 2019 Question Paper ICSE Class 10 Physics — Question 14

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Question

Question 9(b)

The melting point of naphthalene is 80°C and the room temperature is 30°C. A sample of liquid naphthalene at 100°C is cooled down to the room temperature. Draw a temperature time graph to represent this cooling. In the graph, mark the region which corresponds to the freezing process. [3]

Answer

The temperature-time graph representing the cooling of naphthalene is shown below:

The melting point of naphthalene is 80°C and the room temperature is 30°C. A sample of liquid naphthalene at 100°C is cooled down to the room temperature. Draw a temperature time graph to represent this cooling. In the graph, mark the region which corresponds to the freezing process. ICSE 2019 Physics Solved Question Paper.