question_answer 1)

                Can there be a time-temperature graph as follows? Justify your answer.                 (i)                                 (ii)                 (iii) (iv)

Answer:

                (i) It shows a time-temperature graph. It shows increase in temperature with increase in time. (ii) It shows a time-temperature graph. It shows decrease in temperature with increase in time. (iii) It cannot be a time-temperature graph because it shows many-many different temperatures at one particular time. (iv) It shows a time-temperature graph. It shows a fixed temperature at different times.