Among the following surfactant molecules, the surfactant that forms micelles in aqueous solution at the lower CMC at ambient condition is:

1. ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_{15}{\mathrm{N}}^{+}{\left({\mathrm{CH}}_3\right)}_3{\mathrm{Br}}^{-}$

2. ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_{11}{\mathrm{OSO}}_3^{-}{\mathrm{Na}}^{+}$

3. ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_6{\mathrm{COO}}_{}^{-}{\mathrm{Na}}^{+}$

4. ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_{11}{\mathrm{N}}^{+}{\left({\mathrm{CH}}_3\right)}_3{\mathrm{Br}}^{-}$

Which of the following does not form anionic micelle?

1. C₁₂H₂₅COONa                   

2. C₁₂H₂₅SO₄Na

3. C₁₂H₂₅SO₃Na                     

4. C₁₂H₂₅(NH₃)₃Cl

Milk can be preserved by adding a few drops of?

1. Formic acid solution             

2. Formaldehyde solution

3. Acetic acid solution             

4. Acetaldehyde solution

Which is an emulsion?

1. Boot polish                             

2. Lipstick

3. Shampoo                               

4. All of these

Emulsions of polyvinylacetate are used in:

1. polishes

2. latex paints

3. fire works

4. rayons

The Critical Micelle Concentration (CMC) is:

1. The concentration at which micellization starts

2. The concentration at which true solution is formed

3. The concentration at which one molar electrolyte is present per 1000 g of solution

4. The concentration at which solute and solution from equilibrium

Detergent action of synthetic detergents is due to their:

1. interfacial area

2. high molar mass

3. ionization

4. emulsifying properties

An emulsifier is a substance that:

1. Homogenesis the emulsion

2. Stabilizes the emulsion

3. Retards the dispersion of liquid in the liquid

4. Coagulates the emulsion

Which is an emulsifier?

1. Soap

2. Oil

3. NaCl

4. Water

At the critical micelle concentration (CMC) the surfactant molecule

1. deccompose

2. dissociate

3. associate

4. become completely soluble