Question

a certain freezing process requires that the room temperature be lowered from 40 degree Celsius at the rate of 5 degrees celsius or are. What will be the room temperature and hours after the process begin?

Answer 1

Answer:

Temperature set = 40°C

Rate per hour = -5°C drop

After 1 hour = 40-5

                   = 35°C

Time taken for 0°C = 5x8=40

                    so.. 5hrs to 0°C