ScienceCLASS 10CBSE
answered 27 Mar 2026Five 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?
A.VERIFIED ANSWERfact-checked by tutors
In increasing order of hydrogen ion concentration,
pH 11(C) < pH 9(E) < pH 7 (D) < pH 4 (A) < pH 1 (B)
PH11 – Strongly alkaline
pH9 – Weakly alkaline
PH7 – Neutral
pH4 – Weakly acidic
pH1 – Strongly acidic