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Question

Four solutions A, B, C and D when tested with universal indicator showed pH as 4,11,7 and 9 respectively. Which one of the four solutions is neutral?
  1. A
  2. B
  3. C
  4. D

A
A
B
D
C
C
D
B
Solution
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Solution in test tube A,B are acidic in nature as they have pH less than 7 while solutions in tubes C are basic in nature as they have pH more than 7. Solution in test tube D is neutral as pH of this solution is7. This is given by the pH scale or pH meter.

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