Q. If detergent is added
A) Surface tension decreases
B) Surface tension increases
C) Surface tension can increase or decrease
D) No effect
Explanation
(a)
Cleaning action of detergents is due to lowering of surface tension between water and greasy substances
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.