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Hard and Soft Water

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Question

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(h) The sticky substance formed when soap is added to hard water is

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Solution

The sticky substance formed when soap is added to hard water is scum

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Similar questions

Q. Fill appropriate terms in the blanks .
( white cement , soap, detergent , wearing of bones, tooth decay, hard, soft, Portland, fatty acid )

(a) The substance that helps water to remove dirt from the surface of materials is called ............... .

(b) Fluoride is used in toothpaste to prevent ................ .

(c) Soap is a salt of ............... and sodium hydroxide.

(d) Synthetic detergents can be used in .............. water as well .

(e) For construction purposes ............... cement is the most commonly used cement.

White sticky substance formed when soap is mixed with hard water is called ____________.

Q. Assertion (A): Hard water forms sticky precipitate with soap.
Reason (R): Hard water contains calcium and magnesium ions

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Adding soap to hot hard water gives foam but in cold hard water is do not ? why?

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Hard and Soft Water

Standard VIII Chemistry

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