Single Answer MCQ
Q-00040051
What can be used to test if a cleaning agent is a soap or detergent?
1
Solubility in water
2
Formation of a scum
3
Foaming ability
4
Color change
Answer and Solution
Answer
B. Formation of a scum
Solution:
A simple test is to add the cleaning agent to hard water; if it forms scum or a precipitate, it is likely soap. Detergents do not usually form scum in hard water.
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