61. The element used in the manufacture of safety matches is
62. This group of alumino-silicate minerals is widely used in making electrical insulators
63. Commercial Vaseline is derived from
64. Alum is used as
65. Antacid tablets consist of
66. Aspirin is
67. Aspirin is common name of
68. By-product obtained by soap industry is
69. Chloroform can be used as
70. Soap helps in better cleaning of clothes because
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