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

 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
(a) neutral?
(b) strongly alkaline?
(c) strongly acidic?
(d) weakly acidic?
(e) weakly alkaline?
Arrange the pH in increasing order of hydrogen-ion concentration.
Answer: (a) neutral -> D
(b) strongly alkaline -> C
(c) strongly acidic -> B
(d) weakly acidic -> A
(e) weakly alkaline -> E 
The arrangement of pH in increasing order of hydrogen-ion concentration is 11<9<7<4<1