The temperature at which the surface tension of water is zero
0oC
277 K
370oC
Slightly less than 640 K
As we learnt in
Surface tension -
Surface tension decreases as the temperature is raised.
-
At critical temperature , the surface tension of water is zero.
Option 1)
0oC
Incorrect
Option 2)
277 K
Incorrect
Option 3)
370oC
Correct
Option 4)
Slightly less than 640 K
Incorrect
Study 40% syllabus and score up to 100% marks in JEE