Related Questions

What are the soaps?
A Salts of silicates
B Mixture of glycerol and alcohols
C Sodium or potassium salts of heavier fatty acids
D Esters of heavy fatty acids
Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
A Emulsification
B Dispersion
C Precipitation
D Wetting
Shaving soaps are
A Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property
B Metalic soaps compounded with frothing agents
C High free alkali soaps having excess of cane sugar and alcohol
D None of these
Soaps remove dirt by
A Increasing the surface tension
B Decreasing wettability
C Supplying hydrophyllic group
D None of these
Transparent soaps (e.g. Pears) are
A Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
B Metallic soaps with frothing agent and free stearic acid to achieve transparency
C Metallic soaps with frothing agent from which glycerine has not been recovered
D None of these
Virus/es inactivated by lipid solvents and detergents is/are
A Influenza virus
B Rabies virus
C SARS-CoV-2
D Poliovirus
E Rotavirus
Synthetic detergents are prepared from
A potassium salts of higher fatty\u00adacids
B sodium salts of higher fatty\u00adacids
C hydrocarbons of petroleum
D glycerides
Detergents used for cleaning clothes and utensils contain
A Nitrates
B Bicarbonates
C Sulphonates
D Bismuthates
Carboxymethyl cellulose (CMC) is added in detergents to
A Prevent redeposition of soil on cleaned surface
B Act as optical brightening agent
C Inhibit corrosion in washing machines made of aluminium
D None of these
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
A Sodium silicate
B Sodium borate
C Sodium tripolyphosphate (STPP)
D Caustic soda

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