71. Hydrochloric acid is also known as
72. Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?
73. 'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
74. Coke used for the production of calcium carbide should have
75. In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
76. Nylon-6 is manufactured from
77. Oil is a/an
78. Saponification value/number of an oil or fat is a measure of its
79. High acid value of an oil or fat is an indication of
80. Oleum produces fumes of
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