Epoxy resin__________________?
(A) Is a good adhesive
(B) Is an elastomer
(C) Cannot be used for surface coatings
(D) Is a polyester
Hydrogenation of oil/fat does not_________________?
(A) Improve its resistance to rancid oxidation
(B) Raise its melting point
(C) Remove double bonds
(D) None of these
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its________________?
(A) Poor oxidation stability and high gum forming tendency
(B) Greater tendency of decomposition at elevated temperature
(C) Hydrolysis tendency in presence of water
(D) All A,
Fusion of limestone and ______________ produces high alumina cement?
(A) Sand
(B) Bauxite
(C) Quicklime
(D) Calcite
Chloramines are used in water treatment for_____________________?
(A) Disinfection and control of taste & odour
(B) Corrosion control
(C) Removing turbidity
(D) Control of bacteria
Ethanol amine is produced using ammonia and_________________?
(A) Ethyl benzene
(B) Ethylene oxide
(C) Ethanol
(D) Ethane
Ore concentration by froth floatation utilises the ______________ of ore particles ?
(A) Density difference
(B) Wetting characteristics
(C) Terminal velocities
(D) None of these
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________?
(A) Bakelite
(B) Neoprene
(C) Teflon
(D) Nylon-66
Bleaching action of bleaching powder is due to its _____________ properties ?
(A) Reducing
(B) Oxidising
(C) Disinfecting
(D) None of these