71. Which of the following is an unsaturated fatty acid?
72. Zeolite used in water softening process (cation exchange) is regenerated by washing with
73. White phosphorous is stored under water, because
74. The most stable allotropic form of phosphorous is the __________ phosphorous.
75. Coagulant is used __________ filtration.
76. Deacon's method is used for the manufacture of
77. Solvay process is used for the manufacture of
78. The terminology 'BTX' used in coal tar distillation industry refers to
79. Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
80. Sulphuric acid completely saturated with sulphur trioxide is called
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