Question

Give reasons:
1. Laboratory thermometers cannot be used to measure human body temperature.
2. A constriction is present in clinical thermometers.

Answer 1

Answer:

Explanation:

1)laboratory thermometer cannot be used to measure the temperature of a human body because the range of a laboratory thermometer is high generally from –10°C to 110°C, while as normal body temperature in humans is only 37°C. Also laboratory thermometer does not have a kink, so mercury falls on its own.

2)In a mercury thermometer, it prevents the mercury from dropping immediately back into the bulb when the thermometer is removed from the patient. That constriction may or may not be present in an alcohol thermometer.