Which of the following statements explain why hot soapy water is more effective in cleaning oil-stained dishes?
A
The oil on the dishes repels the soap
B
soap and heat decrease the surface tension of oil
C
soap increases the surface tension of oil and water
D
Hot water increases the surface tension of oil
Verified Correct Answer: B.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #59372)