61. Pick out the wrong statement pertaining to the soap manufacture.
62. Carbon disulphide is mainly used in the production of
63. Insulin is an __________ drug.
64. Inversion of sucrose produces
65. The function of gypsum addition during cement making is to
66. Catalytic oxidation-dehydrogenation of methyl alcohol produces
67. The combustion reaction, C + O2 = CO2, is
68. In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
69. Sodium chloride content in sea water is about __________ gms/litre.
70. Basic oxide is absent in __________ glass.
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