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7.Can there be a time-temperature graph as follows? Justify your answer.




Answer :

(i) It represents a time-temperature graph because as per the graph the temperature increases as the time increase.
(ii) It shows a time-temperature graph because the temperature decreases as the time increases.

(iii) It does not represent a time-temperature graph because the temperature is increasing but the time remains constant which is not possible.

(iv) It represents a time-temperature graph because the temperature remains constant when the time is increasing.