Q1. HEATING CURVE Different substances have different melting points and boiling points, but the shape of their heating curves are very similar. For example heating curve for iron is shown below- Heating Curve for Iron F 300D E 2500F 200 Temperature Celsius 00 100 A 0 Time as heat is added at a constant rate Answer the following questions- 1.1 What does the portion BC and De represent? Temprature is constant and Time 1.2 What are the melting point and boiling point of iron? 1.3 In portion BC, as the time increases temperature does not change, why? 1.4 EF represents which phase of iron? (a) Liquid phase (b) Solid phase (c) Gaseous phase
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Celsius"
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1.1 What does the portion BC and De represent? Temprature is constant and Time 1.2 What are the melting point and boiling point of iron? 1.3 In portion BC, as the time increases temperature does not change, why? 1.4 EF represents which phase of iron? (a) Liquid phase (b) Solid phase (c) Gaseous phase
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