320760
Position of non polar and polar part in micelles:
1 Polar at outer surface but non polar at inner surface
2 Polar at inner surface but non polar at outer surface
3 Distributed over all the surface
4 Are present in the surface only
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320761
Solutions of soaps and detergents exhibit colloidal properties at
1 Low concentrations
2 Higher concentrations
3 Very low concentrations
4 Medium concentrations.
Explanation:
At high cocentrations soap and detergent solutions exhibit colloidal properties.
CHXII05:SURFACE CHEMISTRY
320762
Under ambient conditions, which among the following surfactants will form micells in aqueous solution at lowest molar concentration?
1
2
3
4
Explanation:
Greater the surface area, greater the van der Waal forces of attraction and therefore at lesser concentration micelle formation will take place. In case of due to greater chain length, greater will be van der Waal force.
JEE - 2015
CHXII05:SURFACE CHEMISTRY
320763
Which among the following detergents is nonionic in character?
1 Sodium lauryl sulphate
2 Pentaerythrityl stearate
3 Cetyl trimethyl ammonium chloride
4 Sodium n-dodecyl benzene sulphonate
Explanation:
Pentaerythrityl stearate is non-ionic detergent while sodium carboxyl sulphate and sodium n-dodecyl benzene sulphonate are anionic detergent. Also, cetyl trimethyl ammonium chloride is a cationic detergent.
320760
Position of non polar and polar part in micelles:
1 Polar at outer surface but non polar at inner surface
2 Polar at inner surface but non polar at outer surface
3 Distributed over all the surface
4 Are present in the surface only
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320761
Solutions of soaps and detergents exhibit colloidal properties at
1 Low concentrations
2 Higher concentrations
3 Very low concentrations
4 Medium concentrations.
Explanation:
At high cocentrations soap and detergent solutions exhibit colloidal properties.
CHXII05:SURFACE CHEMISTRY
320762
Under ambient conditions, which among the following surfactants will form micells in aqueous solution at lowest molar concentration?
1
2
3
4
Explanation:
Greater the surface area, greater the van der Waal forces of attraction and therefore at lesser concentration micelle formation will take place. In case of due to greater chain length, greater will be van der Waal force.
JEE - 2015
CHXII05:SURFACE CHEMISTRY
320763
Which among the following detergents is nonionic in character?
1 Sodium lauryl sulphate
2 Pentaerythrityl stearate
3 Cetyl trimethyl ammonium chloride
4 Sodium n-dodecyl benzene sulphonate
Explanation:
Pentaerythrityl stearate is non-ionic detergent while sodium carboxyl sulphate and sodium n-dodecyl benzene sulphonate are anionic detergent. Also, cetyl trimethyl ammonium chloride is a cationic detergent.
320760
Position of non polar and polar part in micelles:
1 Polar at outer surface but non polar at inner surface
2 Polar at inner surface but non polar at outer surface
3 Distributed over all the surface
4 Are present in the surface only
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320761
Solutions of soaps and detergents exhibit colloidal properties at
1 Low concentrations
2 Higher concentrations
3 Very low concentrations
4 Medium concentrations.
Explanation:
At high cocentrations soap and detergent solutions exhibit colloidal properties.
CHXII05:SURFACE CHEMISTRY
320762
Under ambient conditions, which among the following surfactants will form micells in aqueous solution at lowest molar concentration?
1
2
3
4
Explanation:
Greater the surface area, greater the van der Waal forces of attraction and therefore at lesser concentration micelle formation will take place. In case of due to greater chain length, greater will be van der Waal force.
JEE - 2015
CHXII05:SURFACE CHEMISTRY
320763
Which among the following detergents is nonionic in character?
1 Sodium lauryl sulphate
2 Pentaerythrityl stearate
3 Cetyl trimethyl ammonium chloride
4 Sodium n-dodecyl benzene sulphonate
Explanation:
Pentaerythrityl stearate is non-ionic detergent while sodium carboxyl sulphate and sodium n-dodecyl benzene sulphonate are anionic detergent. Also, cetyl trimethyl ammonium chloride is a cationic detergent.
320760
Position of non polar and polar part in micelles:
1 Polar at outer surface but non polar at inner surface
2 Polar at inner surface but non polar at outer surface
3 Distributed over all the surface
4 Are present in the surface only
Explanation:
Conceptual Questions
CHXII05:SURFACE CHEMISTRY
320761
Solutions of soaps and detergents exhibit colloidal properties at
1 Low concentrations
2 Higher concentrations
3 Very low concentrations
4 Medium concentrations.
Explanation:
At high cocentrations soap and detergent solutions exhibit colloidal properties.
CHXII05:SURFACE CHEMISTRY
320762
Under ambient conditions, which among the following surfactants will form micells in aqueous solution at lowest molar concentration?
1
2
3
4
Explanation:
Greater the surface area, greater the van der Waal forces of attraction and therefore at lesser concentration micelle formation will take place. In case of due to greater chain length, greater will be van der Waal force.
JEE - 2015
CHXII05:SURFACE CHEMISTRY
320763
Which among the following detergents is nonionic in character?
1 Sodium lauryl sulphate
2 Pentaerythrityl stearate
3 Cetyl trimethyl ammonium chloride
4 Sodium n-dodecyl benzene sulphonate
Explanation:
Pentaerythrityl stearate is non-ionic detergent while sodium carboxyl sulphate and sodium n-dodecyl benzene sulphonate are anionic detergent. Also, cetyl trimethyl ammonium chloride is a cationic detergent.
