Q1 of 13 Page 158

The chief sources of oils used to make soap are,

The chief sources of oils used to make soap are animals and plants.


On small scale oil, sodium hydroxide and common salt are used to make soap. Oil and sodium hydroxide is heated in the kettle then soap and glycerine are formed, Salt is added to separate soap from glycerin.


Oil/fat + sodium hydroxide → soap + glycerin


Detergents are made using petroleum products.

More from this chapter

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1

Chlorine is prepared in the laboratory by the action of,

 2

Fill in the blanks:

1. MnO2 + 4HCl → MnCl2 + _______ + ________ .


2. Common name of sodium chloride is ________ .


3. Chemical name of baking soda is ___________ .

 3

Answer the following:

Pure and dry chlorine gas is collected by the upward displacement of air. Give reason.

 3

Answer the following:

Name the compound of chlorine


1. Which is an anesthetic?


2. Which is used as a refrigerant?


3. Which is a disinfectant?


4. Which is used to make pipes and tube?


5. which liberates chlorine on exposure to air.