Question

Which one of the following is the lowest possible temperature?

(a) 0° C

(b) -073° C

(c) -173° C

(d) -273° C

Answer 1

Correct option is (d) -273° C

At 0 K or −273°C, the volume of the gas becomes equal to zero. The gas ceases to exists. Hence, −273°C is the lowest possible temperature.