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Materials We Use — Science STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7ScienceMaterials We Use4 Marks
Question
Natural detergents and Man-made detergents
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Answer

Natural detergentsMan-made detergents
1. Soap nut (ritha) and soap pod (shikekai) are the natural detergents.1. Soap is man-made detergent soft soap and hard soap.
2. Natural detergents do not have harmful effect on human skin or on silk or woollen clothes.2. Soap has effect on skin and cloth because it has chemicals in it.
3. Soap nut, soap pod contain a chemical saponin.3. Soap has acid in it, soap is sodium and potassium salt of fatty acids.
4. It is naturally available.4. It is man made using chemicals and oil.

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