A. Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the
whiteness appearance of white fabrics
B. Attain distinctiveness from other brands
C. Act as tarnish inhibitor for metals like German silver
D. None of these
Related Mcqs:
- 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 - Carboxymethyl cellulose (CMC) is added in detergents to act as a/an___________________?
A. Surfactant
B. Builder
C. Optical brightening agent
D. Anti soil redeposition agent - High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
A. Flocculate the impurities
B. Facilitate fast filtration
C. Both A. and B.
D. Neither A. nor B. - Bio-degradable detergents ___________________?
A. Can be readily oxidised
B. Pose problem in sewerage plant
C. Have an isoparaffinic structure
D. Should not be used as it spoils the cloth - During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to__________________?
A. Increase the rate of absorption
B. Avoid corrosion
C. Reduce the cooling water circulation rate
D. None of these - The purpose of adding Na2CO3 to water of low alkalinity is to__________________?
A. Permit the use of alum as a coagulant
B. Increase the softening capacity of zeolite
C. Facilitate easy regeneration of zeolite
D. All A , B. and C. - Phenolic antiseptics are added in the __________________ soap?
A. Shaving
B. Medicated
C. Metallic
D. Transparent - 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 - ______________ are added in lacquers to remove film brittleness and to improve adhereness?
A. Film forming materials
B. Plasticisers
C. Diluents
D. Solvents
