A. Hard water contains sulphate
B. They form insoluble calcium soaps which precipitate
C. They attract back the removed dirt
D. None of these
Related Mcqs:
- Which of the following is used as a binding material in soap to improve soap texture ?
A. Rosin
B. Borax
C. Benzyl acetate
D. Sodium carbonate - Oils and fats are converted to soap in a process called _________________?
A. Hydrogenation
B. Esterification
C. Saponification
D. None of these - Fatty material used in soap making is _______________________?
A. Fatty acid
B. Fatty alcohols
C. Tallow
D. Detergents - Hydrophilic group of a soap or detergent solution is____________________?
A. Water hating
B. Soil loving
C. Water loving
D. None of these - Sulphur addition in soap is done to _____________________?
A. Improve the soap texture
B. Cure pimples & dandruff
C. Fasten lather formation
D. Increase its cleansing action - Builders are added in soap to act as___________________?
A. Cleaning power booster
B. Anti-redeposition agent
C. Corrosion inhibitor
D. Fabric brightener - Pick out the wrong statement pertaining to the soap manufacture?
A. Transparent soaps are made by cold process
B. Organic pigments are used as colouring materials in the soap manufacture
C. Both laundry as well as toilet soaps are manufactured by hot process
D. Colourless rosin is used in the manufacture of laundry soaps - Rosin soap is added during paper manufacture to____________________?
A. Impart adhesive properties
B. Improve opacity
C. Impart resistance to penetration by liquids
D. None of these - Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap?
A. Hard
B. Soft
C. Metallic
D. Lubricating - Free alkali in a toilet soap is _______________ that in a laundry shop ?
A. Less than
B. More than
C. Same
D. None of these
