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Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. ... By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale
Question : Absolute zero is defined as:
Option 1: the temperature at which all molecular motion ceases.
Option 2: at which water boils at 298K.
Option 3: at which liquid helium boils.
Option 4: at which the volume becomes zero.
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