Mercury is largely used in thermometers to measure the temperature. It is a very dangerous metal as its density is very high. If it get into the food chain, it leads to mercury poisoning.
(a) What two precautions you must take while handling equipments containing mercury?
(b) Why mercury is used in thermometers?
(c) Can you suggest other alternatives to mercury thermometers?
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we must handle the equipment carefully and firmly.
it there is a mercury spill , we must leave the area immediately and inform our parents and teachers.
mercury is used in thermometer because it has a high coefficient of expansion so that even a small rise in temperature about sufficient expansion which can be detected in the capillary of the calibrated part of the thermometer.
other alternatives to mercury are Digital thermometer and spirit thermometers.
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