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Science CBSE Homework Assignments
Class 10
Carbon and its compound
Soaps and detergents
1.
Soaps and detergents
Question:
3
m.
1.
Which of the following is not correctly matched ?
Hard soaps - sodium salts of fatty acids
Soft soaps - potassium salts of fatty acids
Hydrophilic - water insoluble
None of these
2.
Cleansing action of soaps includes:
formation of micelles
emulsification of oil or grease
lowering of surface tension of water
all of the above
3.
Washing powders contain detergent in the following range
10 - 15%
15 - 30%
50 - 60%
40 - 50%
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