CSEC Chemistry · January 2018 · Paper 1 · Question Q59
It is better to use soapless detergents for washing in hard water than it is to use soap because soapless detergents
- (A)are cheaper than soaps
- (B)are more biodegradable than soaps
- (C)are more soluble in hard water than soaps
- (D)form an insoluble scum in hard water
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