Observe the given figures and choose the correct option :

(1) pH of I is greater than pH of II and III	(2) pH of III is greater than pH of I and II
(3) pH of I

Correct answer: (4) pH of II is greater than pH of I and III

Explanation: pH range of acids is less than 7 while bases have a pH range of more than 7. Water has a pH of 7. Sodium hydroxide is a base, so it will have maximum pH among the three solutions and hydrochloric acid being an acid will have the lowest pH. Hence, the pH of II (sodium hydroxide) is greater than pH of I (Hydrochloric acid) and III (water).

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Updated on: 10-Oct-2022

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