Question

Scouring soaps and soap powder contain soap along with:
(A) lime
(B) powdered pumice
(C) $A{l_2}{\left( {S{O_4}} \right)_3}$
(D) All of the above

Answer 1

Hint:Scouring soaps and powder contains abrasive powder which are generally used to clean deposits on hard surfaces such as floors, bathroom, or kitchen tiles with a little water. Scouring soap is defined as the soap that removes dirt, grease, and other scars by hard scrubbing. The powder consists of insoluble abrasive powder nearly about $80\% $, a soluble base \[\] and a detergent $2\% $.

Complete step by step answer:
Scouring soaps and soap powder contains soap along with a scouring agent that is required to eliminate the impurities effectively. Such as sizing agents or lubricating agents are used to remove stains from hard surfaces. Commonly used abrasive powder includes silica, talc, powdered pumice of finely divided sand and builders like sodium carbonate and trisodium phosphate. The role of builders is to make the closing action soaps in a better way.
Silica and pumice are hard abrasives which can remove tough stains but may also scratch glass, metal etc.
So the correct option is (B).

Additional Information:-
Soaps are sodium or potassium salts of long chain batty acids. When triglycerides in fat / oil react with aqueous $NaOH$ or $KOH$ , they are converted into soap and glycerol. Since this reaction leads to the formations of soap, it is called the saponification process.

Note:
Among the given four options, $A{l_2}{\left( {S{O_4}} \right)_3}$ is ammonium sulphate which is sometimes called alum and is mainly used as a disinfectant for purification of drinking water. Lime is a basic white powdered compound known as Calcium hydroxide or slaked lime and is mainly used in food preparation.