Question

Why Kelvin scale is regarded better than Celsius scale of temperature

Answer 1

Absolute zero. In 1848, Kelvin used this as a basis for an absolute temperature scale. He defined "absolute" as the temperature at which molecules would stop moving, or "infinite cold." From absolute zero, he used the same unit as Celsius to determine the increments

Answer 2

becoz it don't give values in negative and it provide a wide range of temperature scale and it is the SI unit