Courses
Courses for Kids
Free study material
Offline Centres
More
Store

# Soap helps is cleaning clothes, because(A) It attracts the dirt particles(B) It decreases the surface tension of water(C) It increases the cohesive force between water molecules(D) It increases the angle of contact

Last updated date: 19th Apr 2024
Total views: 34.8k
Views today: 1.34k
Verified
34.8k+ views
Hint We understand the definition of soap here so we discuss the reason for using soap accordingly. A soap molecule consists of a chain of carbon atoms where oil is drawn from one end of the chain and water is drawn from the other. Soap should be balanced and the surface tension level should not be applied to too much or too little of the cleaning ingredient here.
Useful formula:
Surface tension of water,
$F{\text{ }} = {\text{ }}2\gamma L{\text{ }} = {\text{ }}2\gamma 2\pi r{\text{ }} = {\text{ }}4\gamma \pi r$
Where,
$F$ force applied
$r$ pressure inside a soap bubble
$\gamma$ surface tension for soapy water