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Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts3 Marks
Question
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
  1. Neutral?
  2. Strongly alkaline?
  3. Strongly acidic?
  4. Weakly acidic?
  5. Weakly alkaline?
Arrange the pH in increasing order of hydrogen-ion concentration.
✓

Answer

Solution pH
Neutral (D) 7
Strongly alkaline (C) 11
Strongly acidic (B) 1
Weakly acidic (A) 4
Weakly alkaline (E) 9
Arrangement of pH in the increasing order of hydrogen ion concentration is as follows:
pH (11)
C
pH (9)
E
pH (7)
D
pH (4)
A
pH (1)
B
pH in the increasing order of hydrogen ion concentration
 

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