71. Enzymes are
72. Neoprene is chemically known as
73. Epoxy resin
74. Anion exchanger is regenerated usually with
75. Cation exchanger is regenerated usually with
76. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
77. Glycerine is recovered from lye by
78. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
79. Conversion of CO to CO2 by steam in presence of a catalyst is called
80. __________ are added in lacquers to remove film brittleness and to improve adhereness.
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