Which of the following metals has least melting point ? A. Gold B. Silver C. Mercury D. Copper

The correct answer is C. Mercury.

Mercury is a liquid metal at room temperature. It has a melting point of -38.83 degrees Celsius,

which is the lowest of all metals. Gold has a melting point of 1064.18 degrees Celsius, silver has a melting point of 961.78 degrees Celsius, and copper has a melting point of 1085 degrees Celsius.

Mercury is a very dense metal,

with a density of 13.534 grams per cubic centimeter. It is also a very good conductor of electricity and heat. Mercury is used in a variety of applications, including thermometers, barometers, and switches. It is also used in some industrial processes.

Mercury is a toxic metal, and exposure to it can cause a variety of health problems, including neurological damage, kidney damage, and reproductive problems. Mercury is also a environmental pollutant, and it can contaminate water and soil.