At Absolute zero or 0K (Kelvin) ie., -273.15 degree Celsius all atomic movement seizes and there is no more heat energy that it can loose henceforth. Therefore this is the lowest entropy state a matter could achieve theoretically.

It is Zero degree Kelvin which equals to - 273,15 degree Celsius At the above mentioned temperature a substance has reached the point of lowest internal energy and therefore the lowest possible entropy value.

What would be the temperature of resultant if we mix 1kg of ice with 1kg of steam? (Share your working also)

A cuboid of dimension 7 cm * y cm * 15 cm is given. Find the minimum value of y so that at least two cones of maximum volume having some dimensions and a height of 15 cm, can be cut from this solid.