Question

which of the following cannot be a time temperature graph?
plz answer fast as you can

Answer 1

Answer is (D). Reason: in a non isolated system, the temp-time graph can only go in one direction, either downwards or upwards if external energy is supplied.

Answer 2

Graph (B) cannot be a time temperature graph.

Explanation:

In option (b) temperature is increasing in constant time. This case is invalid since the different temperature is not possible at a time.

In option (a), the temperature is increasing as time increases. It is a valid case.

In option (c), the temperature is decreasing as time increases, which is also a valid case.

In option (d), the temperature remains constant as time increases, which is also possible.