Dirty cloths containing grease and oil stains are cleaned b – McqOptions

MCQOPTIONS

1.	Dirty cloths containing grease and oil stains are cleaned by adding detergents to water. Stains are removed because detergent [CDS]
A.	reduces drastically the surface tension between water and oil
B.	increases the surface tension between water and oil
C.	increases the viscosity of water and oil
D.	decreases the viscosity in detergent mixed water
Answer» B. increases the surface tension between water and oil

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