1.

Write answer to the following questions.(a) How does the use of a detergent help to clean soiled clothes ?(b) How will you check with the help of soap powder whether water is hard ?(c) What are the important ingredients of a toothpaste , and what is the function of each ?(d) What are the ingredients of cements ?(e) What will happen if cement is not used in making concrete ?(f) Make a list of detergents that you use.(g) What should be expected from a detergent for delicate garments ?(h) What is meant by ' surface activity'? Name three chemicals responsible for the surface activity of various detergents.

Answer»

Write answer to the following questions.



(a) How does the use of a detergent help to clean soiled clothes ?



(b) How will you check with the help of soap powder whether water is hard ?



(c) What are the important ingredients of a toothpaste , and what is the function of each ?



(d) What are the ingredients of cements ?



(e) What will happen if cement is not used in making concrete ?



(f) Make a list of detergents that you use.



(g) What should be expected from a detergent for delicate garments ?



(h) What is meant by ' surface activity'? Name three chemicals responsible for the surface activity of various detergents.







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