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Four students A, B, C and D of Class X m...

Four students A, B, C and D of Class X measured the pH of the given samples of distilled water, 0.1 M solution of ethanoic acid, 0.1 M solution of hydrochloric acid and 0.1 M solution of sodium hydroxide using pH papers at 298 K. Tell which one of the following represents a correct measurement?

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The correct Answer is:
D
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