A. Increasing the surface tension
B. Decreasing wettability
C. Supplying hydrophilic group
D. None of these
Related Mcqs:
- 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. Metallic soaps compounded with frothing agents
C. High free alkali soaps having excess of cane sugar and alcohol
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 - Which of the following processes can remove both temporary as well as permanent hardness of water ?
A. Filtration
B. Boiling
C. Distillation
D. None of these - Lime and soda ash are added to water to remove ___________________?
A. Bicarbonates & sulphates of calcium and magnesium
B. Undesirable taste and odour
C. Bacteria
D. Its corrosiveness - ______________ are added in lacquers to remove film brittleness and to improve adhereness?
A. Film forming materials
B. Plasticisers
C. Diluents
D. Solvents - Penicillin is separated from fermented broth by ____________________?
A. Extraction with amyl or butyl acetate
B. Ternary Azeotropic distillation
C. Evaporator in calandria
D. Extractive distillation - Finely ground calcium aluminate & silicate is a/an ____________________?
A. Cermet
B. Cement
C. Abrasive
D. Explosive - Hydrogenation of oil takes place in a/an ____________________ reactor ?
A. Autothermal
B. Trickle bed
C. Plug flow
D. None of these - Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
A. Reduction
B. Roasting
C. Calcination
D. Smelting
