Soaps

Q.

What is the difference between bathing soap and washing soaps?

Q. What is Bromine water? Its preparation, properties and uses?

Q.

Differences between saponification and esterification?

Q.

Explain tonicity. How solutions are classified on the basis of tonicity.

Q.

Explain the cleansing action of soaps.

Q.

Why hard water do not form lather with soap.

Q.

Glycerol is added to soap. It functions ...
(a) as a filler
(b) to increases leathering
(c) to prevent rapid drying
(d) to make soap granules

Q.

Temporary hardness can be removed by mixing water with slaked lime, this process is known as softening of water.

1. True
2. False

Q.

Why do soaps not work with hard water ?

Q.

Surgeons spray ether to perform minor surgeries. Why?

Q. Explain the mechanism of cleansing action of soaps.

Q. The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of $KCl,C{H}_{3}OH$ and $C{H}_3(C{H}_2{)}_{11}OS{O}_3^{-}N{a}^{+}$ at room temperature. The correct assignment of the sketches is

1. $I:KClII:C{H}_{3}OHIII:C{H}_3(C{H}_2{)}_{11}OS{O}_3^{-}N{a}^{+}$
2. $I:C{H}_3(C{H}_2{)}_{11}OS{O}_3^{-}N{a}^{+}II:C{H}_{3}OHIII:KCl$
3. $I:KClII:C{H}_3(C{H}_2{)}_{11}OS{O}_3^{-}N{a}^{+}III:C{H}_{3}OH$
4. $I:C{H}_{3}OHII:KClIII:C{H}_3(C{H}_2{)}_{11}OS{O}_3^{-}N{a}^{+}$

Q.

What is a soft soap?

Q.

Assertion and Reason
In the following questions a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice..
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is wrong statement.
(e) Assertion is wrong statement reason is correct statement.

Assertion (A) Transparent soaps are made by dissolving soaps in ethanol.
Reason (R) Ethanol makes things invisible.

Q.

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

Q. Catechol is a:

1. monohydric phenol
2. dihydric phenol
3. trihydric phenol
4. None of the above

Q.

Match the items given in Column I and Column II.

	Column I		Column II
A	Saturated solution	$\left(i\right)$	Solution having the same osmotic pressure at a given temperature as that of the given solution.
B	Binary solution	$\left(ii\right)$	A solution whose osmotic pressure is less than that of another.
C	Isotonic solution	$\left(iii\right)$	Solution with two components.
D	Hypotonic solution	$\left(iv\right)$	A solution which contains the maximum amount of solute that can be dissolved in a given amount of the solvent at a given temperature.
E	Solid solution	$\left(v\right)$	A solution whose osmotic pressure is more than that of another
F	Hypertonic solution	$\left(vi\right)$	A solution in solid phase.

Q.

How are transparent soaps manufactured?

Q. Which of the following represents soap

1. C₁₇H₃₅COOK
2. (C₁₇H₃₅COO)₂Ca
3. C₁₅H₃₁COOH
4. C₁₇H₃₅COOH

Q. Soaps are-

1. Sodium salts of long chain carboxylic acids.
2. Glycerides
3. Alkyl benzene sulphonates
4. Glyceric ester of higher fatty acids.

Q.

Definition for colloidion

Q.

Which of the following enhances the leathering property of soap?
(a) Sodium carbonate
(b) Sodium rosinate
(c) Sodium stearate
(d) Trisodium phosphate

Q.

What is the side product of soap industry? Give reactions showing soap formation.

Q. The main difference between bathing and washing soap is:

1. bathing soaps are potassium salts of fatty acids while washing soaps are sodium salts of fatty acids.
2. bathing soaps are sodium salts of fatty acids while washing soaps are potassium salts of fatty acids.
3. bathing soaps are cationic in nature while washing soaps are anionic.
4. bathing soaps are calcium salts of fatty acids while washing soaps are magnesium salts of fatty acids.

Q. Write down the cleansing action of soap?

Q.

The substances which are added to stabilizes the emulsions are called:

1. Aggregates

2. Dialyser

3. Emulsifying agent

4. Peptizing agent

Q. which one of the following sets forms the biodegradable polymers? 1) CH2=CH-CN and CH2=CH-CH-CH=CH2 2) H2N-CH2-COOH and H2N-(CH2)5-COOH 3) OH-Ch2-CH2-OH and HOOC-C6H5-COOH

Q.

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?

Q. Which is more basic and why Aniline and piperidine

Q. Water which gives lather with soap easily is called as hard water.

1. True
2. False