Question

At critical temperature, the surface tension of a
liquid is
(a) Zero
(b) Infinity
(c) The same as that at any other temperature
(d) Cannot be determined

Answer 1

Answer:

a

Explanation:

Surface tension is related to temperature; for that reason, when a value is given for the surface tension of an interface, temperature is also specified. The rule of thumb is that surface tension decreases with the increase of temperature, reaching a value of zero at the critical temperature.