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प्रश्न
Explain why soap cannot be used in hard water.
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उत्तर
Soaps cannot be used in hard water because they lose their cleansing property when used with it. Soaps do not form lather with hard water and instead form scum, as a result of which they lose their cleansing property.
संबंधित प्रश्न
Fill in the following blank with suitable word:
The sodium salt of a long chain fatty acid is called .............
State one advantage of soaps over detergent.
Why have detergents replaced soap as a washing agent?
In a soap micelle, the soap molecules are arranged radially with:
(a) ionic ends directed towards the centre and hydrocarbon ends directed outwards
(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
(c) both ionic ends and hydrocarbon ends directed toward the centre
(d) both hydrocarbon ends and ionic ends directed outwards
Match the following
| 1. | Soap | C6H5 OH |
| 2. | Cement | CaSO4.2H2O |
| 3. | Fertilizers | NaOH |
| 4. | Gypsum | RCC |
| 5. | Phenol | NPK |
TFM in soaps represents ______ content in soap.
The alkaline hydrolysis of fatty acids is termed as ______
Soaps are ester of which type of acids?
______ molecules go and join with dirt and oil in the cloth.
In the soap micelles
