Correct Answer: C
Explanation:
Sol. Mercury is easily the best liquid to use in thermometers, five important reasons are -
It is very reflective, so it’s easy to see and to read accurately.
It doesn’t wet the glass, so you don’t get an inaccurate reading if the temperature is falling.
It is metal, so it’s good conductor of heat.
It expands evenly with the temperature so a linear scale can be used with a high degree of accuracy.
there is a large of range of temperature for which it is a liquid