91. Food preservatives prevent spoilage of food due to microbial growth. Which of the following acid is used as preservative of food items?
92. On the labels of the bottles, some soft drinks are claimed to be acidity regulators. They regulate acidity using
93. Which of the following is the major component of vinegar?
94. To develop photographic plates
95. The Soda-acid fire extinguisher contains
96. Identify the odd one from the following-
97. Atraditional 'battery' contains which of the following chemicals?
98. If the pH value of a salt is 14, then that salt is . . . . . . . .?
99. The solution of which one of the following will have pH less than 7?
100. The pH of milk is 6. When it turns sour, the pH
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