NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Mechanical Properties of Fluids
NEET · Physics · Mechanical Properties of Fluids
Assertion (A) At critical temperature, surface tension of liquids...
Assertion (A) At critical temperature, surface tension of liquids become zero.
Reason (R) At critical temperature, intermolecular forces for liquids and gases become equal.
Options
- ABoth and are true and is a correct explanation for .
- BBoth and are true but is not a correct explanation for .
- C is true but is false.
- D is false but is true.
Correct answer
A. Both and are true and is a correct explanation for .
Step-by-step solution
Critical temperature is temperature at which surface tension of liquid become zero. So it is true. At critical temperature, the intermolecular force between liquid molecules become very weak due to which interaction between molecules vanishes.
Hence, surface tension reduces. So, Reason (R) is also true and is a correct explanation for Assertion (A).