Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
(A) Depithing
(B) Digestion
(C) Bleaching
(D) None of these
____________ are used as corrosion inhibitor for iron & steel in aqueous solutions ?
(A) Phosphates
(B) Chromates
(C) Sulphates
(D) Bi-carbonates
Fusion of bauxite and ________________ produces high alumina cement?
(A) Alum
(B) Limestone
(C) Coke
(D) Quartz
The basic constituent of vegetable oils is ___________________?
(A) Triglyceride
(B) Fatty acids
(C) Fatty alcohol
(D) Mono esters
In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?
(A) 10 atm., 800 °C
(B) 10 atm., 170-180°C
(C) 1 atm., 170 – 180°C
(D) 1 atm., 800°C
Glass is__________________?
(A) Mainly CaO
(B) Subjected to galvanising
(C) A super cooled liquid
(D) All A ,
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
Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?
(A) Oxidation of Na+ ions
(B) Oxidation of Cl- ions
(C) Reduction of Na+ ions
(D) Reduction of Cl- ions
Esterification reaction produces _________________?
(A) Detergent
(B) Vanaspati
(C) Soap
(D) Mercaptans
Haemoglobin is a/an____________________?
(A) Amino acid
(B) Biological catalyst
(C) Protein
(D) Enzyme