Five solutions, A, B, C, D and E, when tested with a universal indicator, showed pH as 4, 1, 11, 7 and 9, respectively. Which solution is
(a) Neutral?
(b) Strongly alkaline?
(c) Strongly acidic?
(d) Weakly acidic?
(e) Weakly alkaline?

In increasing order of hydrogen ion concentration,

p^H 11(C) < p^H 9(E) < p^H 7 (D) < p^H 4 (A) < p^H 1 (B)

P^H = 11 – Strongly alkaline

p^H = 9 – Weakly alkaline

P^H = 7 – Neutral

p^H = 4 – Weakly acidic

p^H = 1 – Strongly acidic