Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9, respectively, which solution is (AS1)

(a) neutral (b) strongly alkaline (c) strongly acidic (d) weakly acidic (e) weakly alkaline

Arrange the pH in increasing order of hydrogen ion concentration.

A is the weakly acidic solution.

B is the strongly acidic solution.

C is strongly alkaline(basic).

D is neutral.

E is weakly alkaline.

Explanation: A scale of measuring hydrogen ion concentration in a solution is called pH scale. pH value of a solution is simply a number which indicates the acidic or basic nature of a solution.

pH of a neutral solution is 7.

Value less than 7 represent the acidic solution.

Value above than 7 represent the alkaline (basic) solution.