Question

Why doctors dip the clinical thermometer in special liquid before checking human body temperature ? for class 7th​

Answer 1

Answer:

1) The doctor may be dips to remove germs from thermometer as, it may be shift to patient 's mouth . 2) He dips to decrease the thermometer's temperature to insure that the reading of body's temperature is accurate . 3) He dip in liquid to check the quality of mercury as some thermometer's are old designed .