81. Oil of Vitriol' is the common name of which of the following?
82. Acid turns blue litmus red and base turns red litmus blue. A student tested a liquid with a red litmus paper which remained red with no change. This shows that the liquid
83. Which one of the following salts when dissolved in water makes the solution basic?
84. . . . . . . . . is the primary acid present in ripe bananas.
85. Antacids are
86. Statement I Addition of water to an aqueous solution of HCl decreases the pH.
Statement II Addition of water suppresses the ionisation of HCl.
Statement II Addition of water suppresses the ionisation of HCl.
87. When mixed with sulphuric acid, the color of litmus solution will be different?
88. Methyl orange . . . . . . . . it happens.
89. What will we see if we take a small amount of liquefied soda and add about 1mL dilute hydrochloric acid to it?
90. If the pH value of X is 9, then the pH value of Y is 2, the pH value of Z is 6 and the pH value of A is 13, then which of the following pairs has strong acid and strong base?
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