Soaps
Trending Questions
Q.
Name the water attracting ionic group in (a) a soap (b) a detergent.
Q. Cationic detergents are sodium salts of sulphonated long chain alcohols or hydrocarbons.
- True
- False
Q. Saponification is –
- A process of preparing soap solution by dissolving soap in water
- A reaction of ester of fatty acid with aqueous sodium or potassium hydroxide
- A process of precipitating soap from colloidal solution of soap and glycerol
- An industrial term used in laundry industry for dry cleaning.
Q. Dettol is mainly composed of
- chlorophenol and chloroxylenol
- phenol and chloroxylenol
- 0.2% of phenol
- chloroxylenol and terpineol
Q. does the reducing property increase or decrease from lithium to cesium (besides the exceptions)?
Q. At 25oC, the specific conductance of 0.01 M aqueous solution of acetic acid is 1.63×10−2Sm−1 and the molar conductance at infinite dilution is 390.7×10−4Sm2 mol−1. Calculate the dissociation constant (Ka) of the acid.
- 9.8×10−5moldm−3
- 1.2×10−3moldm−5
- 2.5×10−3moldm−5
- 1.82×10−5moldm−3
Q. In the preparation of a soap, a fatty acid containing less than eight carbon atoms is not used, because the soap obtained:
- Forms a colloidal solution with water
- Is insoluble in water
- Does not form an emulsion with grease
- Forms an emulsion with grease
Q. How to identify electrophiles and nucleophiles?