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
Related Mcqs:
- Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________?
A. High electrical insulation properties
B. Sharp melting points
C. Low co-efficient of thermal expansion
D. Compressive strength much greater than their tensile strengths - Pick out the wrong statement pertaining to nitric acid ?
A. About 90% of nitric acid is manufactured by Ostwald’s process
B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process - Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction__________________?
A. Decreases with decrease of thickness of the flakes
B. Increases with the increasing flake size keeping the flake thickness constant
C. Increases considerably with the rise of temperature
D. Decreases as the moisture content of flakes increases - 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 - Pick out the false statement pertaining to water treatment ?
A. Aeration of water is effective in CO2 removal
B. The zeolite water softening process reduces the hardness of water by not more than 50%
C. Sodium sulphate or sodium carbonate do not cause hardness in water
D. Water with pH value less than 7, is acidic - Pick out the true statement pertaining to water treatment ?
A. Slow sand filters can remove colour completely
B. Activated carbon can be used for taste & odour control without subsequent filtration
C. Application of activated carbon reduces the temporary hardness of water
D. Normally, the turbidity is removed by adding a coagulant prior to sedimentation - Salt is added in the kettle during soap manufacture to separate ___________________?
A. Soap from lye
B. Glycerine from lye
C. The metallic soap
D. The unsaponified fat from soap - Percentage of glycerine present in the spent lye obtained during soap manufacture is about________________?
A. 0.5
B. 5
C. 20
D. 35 - 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 - Pick out the wrong statement ?
A. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
B. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
C. 75% oleum can be produced by distillation of 20% oleum
D. Contact process of sulphuric acid manufacture uses nickel as the catalyst
