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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

How are transparent soaps manufactured? - Chemistry

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प्रश्न

How are transparent soaps manufactured?

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उत्तर

Transparent soaps are prepared by dissolving the soap in ethanol and then evaporating the excess solvent.

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अध्याय 16: Chemistry In Everyday Life - Multiple Choice Questions (Type - I) [पृष्ठ २३४]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 16 Chemistry In Everyday Life
Multiple Choice Questions (Type - I) | Q 62 | पृष्ठ २३४

संबंधित प्रश्न

Why is bithional added to soap?


What is a soap ?


Write the chemical equation for preparing sodium soap from Glyceryl palmitate . Structural formulae of the compounds are given below.

(C15H31COO)3C3H5 – Glyceryl palmitate


Write the chemical equation for preparing sodium soap from glyceryl oleate . Structural formulae of the compounds are given below.

(C17H32COO)3C3H5 – Glyceryl oleate


Why do soaps not work in hard water?


Explain the cleansing action of soaps.


Write balanced chemical equations for the action of hydrogen bromide on styrene in the presence of a peroxide


How soap is prepared?


What is a soft soap?


If soap has high alkali content it irritates skin. How can the amount of excess alkali be determined? What can be the source of excess alkali?


Why is it safer to use soap from the environmental point of view?


What is the difference between bathing soap and washing soaps?


What are fillers and what role these fillers play in soap?


Match the detergents given in Column I with their uses given in Column II.

Column I Column II
(i)  (a) Dishwashing powder
(ii)  (b) Laundry soap
(iii) \[\ce{C17H33CO\overset{-}{O}\overset{+}{N}a + Na2CO3 + Rosin}\] (c) Hair conditioners
(iv) \[\ce{CH3(CH2)16COO(CH2CH2O)nCH2CH2OH}\] (d) Toothpaste

Assertion: Transparent soaps are made by dissolving soaps in ethanol.

Reason: Ethanol makes things invisible.


Assertion: Sodium chloride is added to precipitate soap after saponification.

Reason: Hydrolysis of esters of long-chain fatty acids by alkali produces soap in colloidal form.


Which of the following is not a correct statement?


Green chemistry in day-to-day life is in the use of ______.


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