Nylon-66 is manufactured from____________________?
(A) Hexamethylene diamine and adipic acid
(B) Hexamethylene diamine and Maleic anhydride
(C) Caprolactam
(D) Dimethyl terephthalate and ethylene glycol
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?
(A) Na2CO3
(B) NaHCO3
(C) H2
(D) None of these
Fermentation of molasses to produce ethyl alcohol is done at ________________ °C?
(A) 20 – 30
(B) < – 5
(C) 100 – 150
(D) 250 – 300
Which of the following has sodium bicarbonate as its main constituent ?
(A) Baking soda
(B) Baking powder
(C) Washing soda
(D) None of these
Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____________________ oil?
(A) Drying
(B) Semi-drying
(C) Non-drying
(D) None of these
Which of the following is used as a coagulant in water treatment ?
(A) Chloramine
(B) Chlorine
(C) Ferrous sulphate
(D) Hydrogen peroxide
Removal of dirt/soil by soaps or detergent does not involve the _______________ of soil ?
(A) Emulsification
(B) Dispersion
(C) Precipitation
(D) Wetting
The basic difference between vegetable oils and fats is in their ___________________?
(A) Density
(B) Chemical properties
(C) Physical state
(D) Composition
Polyvinyl chloride (PVC) is____________________?
(A) A thermosetting material
(B) A condensation polymerisation product
(C) Made by employing emulsion polymerisation
(D) None of these
‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of ____________________?
(A) N2 & H2
(B) CO2 & H2
(C) CO & H2
(D) C & H2