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प्रश्न
What is meant by 'surface activity'?
उत्तर
The surface activity of a substance is the property by virtue of which it can spread on a surface. For example, soapy water easily spreads on any kind of surface and thus is used for cleaning purposes.
संबंधित प्रश्न
Hard water is not available for an experiment. Some salts are given below :
(I) Sodium chloride
(II) Sodium sulphate
(III) Calcium chloride
(IV) Calcium sulphate
(V) Potassium chloride
(VI) Magnesium sulphate
Select from the following group of these salts, each member of which may be dissolved in water to make it hard.
(A) I, II, V
(B) I, III, V
(C) III, IV, VI
(D) II, IV, VI
Explain the formation of scum when hard water is treated with soap.
What are the raw materials required for making soap in a laboratory (or at home)?
State one advantage of soaps over detergent.
Differentiate between:
Detergents and Soaps.
How will you check with the help of soap powder whether water is hard?
What are the differences between Soap and synthetic detergent?
Explain why synthetic detergents are superior to soap.
We are using ______ to remove strong stains on the clothes.
The soap molecule has a
