Draw a temperature time graph from t = 0 minutes to t = 15 minutes. Use your graph to answer the following questions.
(i) What is the temperature of water at t = 7 minutes ?
(ii) What is the temperature after 12 minutes ?
(iii) After how many minutes the temperature is 70°C ?
(iv) After how many minutes of heating, the temperature remains constant? Why is it so ?
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