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Take a chemical thermometer and put the bulb of thermometer under the tongue inside mouth and hold it there for some time and then take it out. Now, see the mercury level and note the reading in your notebook.Wash the thermometer, with an antiseptic solution and measure the body temperature of another student. The mercury level neither rises nor drops in clinical thermometer after taking it out from mouth. It is due to the presence of a kink near the bulb which does not let the mercury level to drop or rise by itself. So, each time before taking the temperature it is held firmly in hand and a few jerks are given so that the mercury goes down.It is not necessary that body temperature of each student is 37°C. It could be slightly higher or slightly lower. Actually, the normal temperature of a healthy body is the average body temperature of a large number of people. This average temperature is 37°C.1. What is body temperature of a healthy person?2. Clinical thermometer is washed with an antiseptic solution before, it is used, why?3. Clinical thermometer is given a strong jerk every time before measuring temperature, Why? |
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Answer» 1. Usually, the body temperature of a healthy person is 37° C. 2. To make clinical thermometer free of any sort of infections, it is washed with antiseptic solution, before it is used. 3. To bring down the mercury level to its low position a jerk is given to thermometer every time. |
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