Question

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) Why mercury is used in thermometers? (b) Can you suggest other alternatives to mercury thermometers? OR Neha bought a statue made of copper. (a)To her surprise it acquired a dull green coating after a couple of months. Explain the reason. (b)Why copper is used in electrical fittings?

Answer 1

Answer:

(a)Mercury is largely used in thermometers to measure the temperature.

(b)Hg is chiefly a matter of choosing among one of the three sensor types used in digital thermometry: platinum resistance (PRT), thermistor, and thermocouple

(a)The statue made of copper will get a dull green coating after a couple of months due to the oxidation of copper and other chemical reactions. When exposed to air and under moisture, copper reacts with water and oxygen.

(b)Copper is used for making electrical wires that are used by your New Haven electrician due to its properties that make it an ideal metal for this purpose.