Detergents

Q.

What is the chemical formula of detergent?

Q.

Explain the following terms with suitable examples. (i) cationic detergents (ii) anionic detergents and (iii) non-ionic detergents.

Q.

What are synthetic detergents? Give example.

Q. Consider the following two statements about soap and detergent –
(i) Soap is natural while detergent is a synthetic product.
(ii) Both soap and detergent precipitate scum in hard water
(iii) Soap is sodium or potassium salt of fatty acids
Which of the above statements is (are) true?

1. (i) and (ii)
2. (ii) and (iii)
3. (iii) and (i)
4. All

Q. Which of the following compounds is an example of a non-ionic detergent?

1. Trimethylcerylammonium bromide
2. Pentaerythritolmonostearate
3. Sodium lauryl sulphonate
4. Sodium cetylsulphate

Q.

When potassium dichromate is treated with dilute sulphuric acid, it forms:

1. Chromium sulphate

2. Ferrochrome

3. Chromate

4. Chromyl chloride

Q.

Name the carbonate which does not decompose by heating.

Q.

With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).

1. The hypochlorite ion is the strongest conjugate base.

2. The molecular shape of only chlorate ion is influenced by the lone pair of electrons of Cl.

3. The hypochlorite and chlorate ions disproportionate to give rise to an identical set of ions.

4. The hypochlorite ion oxidizes the sulfite ion.

Q.

Which of the following is an anionic detergent?

1. Cetyltrimethyl ammonium bromide

2. Glyceryl oleate

3. Sodium lauryl sulphate

4. Sodium stearate

Q.

Which of the following statements are correct?
(a) Cationic detergents have germicidal properties
(b) Bacteria can degrade the detergents containing highly branched chains
(c) Some synthetic detergents can give foam even in ice cold water
(d) Synthetic detergents are not soaps

Q.

What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt?

Q.

The detergent which is used as germicide is?

1. Lauryl alcohol ethoxylate
2. sodium 2- dodeclylbenzenesulphonate.
3. Cetyltrimethylammonium chloride
4. Sodium Lauryl sulphate

Q. The detergent used in hair conditioner is

1. CH₃(CH₂)₁₅NH₂
2. CH₃(CH₂)₁₅NHCH₃
3. CH₃(CH₂)₁₅N(CH₃)₂
4. CH₃(CH₂)₁₅N⁺(CH₃)₃Cl^-

Q.

Polytheleneglycols are used in the preparation of which type of detergents?
a) Cationic detergents
b) Anionic detergents
c) Non-ionic detergents
d) Soaps

Q.

Which of the following are anionic detergents?
(a) Sodium salts of sulphonated long chain alcohol
(b) Ester of stearic acid and polyethylene glycol
(c) Quarternary ammonium salt of amine with acetate ion
(d) Sodium salts of sulphonated long chain hydrocarbons

Q. Which of the following is an example of liquid dishwashing detergent?

1. 
2. 
3. 
4. 

Q. Detergents are prepared by the action of $H_{2}S{O}_4$ followed by neutralization by starting with

1. lauryl alcohol
2. p-nitrophenol.
3. cylcohexanol
4. chlorestrol

Q. Which of the following represents a synthetic detergent

1. C₁₅H₃₁COOK
2. CH₃(CH₂)₁₆COONa
3. CH₃(CH₂)₁₀OSO₃Na
4. All

Q.

What are biodegradable and non-biodegradable detergents? Give one example of each.

Q.

Draw diagram showing micelle formation by the following detergent.
$C{H}_3(C{H}_2{)}_{10}C{H}_{2}OS{O}_{3}Na$

Q.

Is table salt deliquescent in nature

Q. Detergents are known to pollute rivers and waterways. However, detergents can be made biodegradable and pollution free by taking-

1. unbranched hydrocarbon chain
2. hydrocarbon with more branching.
3. benzenoid hydrocarbons
4. cyclic hydrocarbon chain

Q.

Dishwashing soaps are synthetic detergents. What is their chemical nature?

Q.

Freon used as refrigerant is

1. ${\mathrm{CF}}_2={\mathrm{CF}}_2$

2. ${\mathrm{CH}}_2{\mathrm{F}}_2$

3. ${\mathrm{CCl}}_2{\mathrm{F}}_2$

4. ${\mathrm{CF}}_4$

Q.

Which substance is added to water containing suspended impurities to coagulate the suspended impurities and make water fit for drinking purposes.

1. Milk of magnesia

2. KCl

3. NaCl

4. Alum

Q.

How does the branching of hydrocarbon chain of synthetic detergents affect their biodegradability?

Q. A water sample has $ppm$ level concentration of following anions:
$F^{-}=10,S{O}_4^{2-}=100,N{O}_3^{-}=50$ The anion/anions that make/makes the water sample unsuitable for drinking is/are:

1. Both $S{O}_4^{2-}=500ppm$
2. Only $F^{-}$
3. Only $S{O}_4^{2-}$
4. Only $N{O}_3^{-}$

Q. Which of the following is cationic detergent?

NEET 2020

1. Sodium lauryl sulphate
2. Cetyltrimethyl ammonium bromide
3. Sodium stearate
4. Sodium dodecylbenzene sulphonate

Q. What is the type of particle formed after sodium stearate molecules come in contact with a grease particle?

1. Neutral
2. Negatively charged
3. Positively charged from inside and negatively charged from outside
4. Positively charged

Q.

Name few uses of Red Phosphorus