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Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(in) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base
  • a)
    (i) and (iii)
  • b)
    (ii) and (iii)
  • c)
    (i) and (iv)
  • d)
     (ii) and (iv)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following statements is correct about an aqueous solution...

(i) Higher the pH, stronger the acid:


  • A higher pH indicates a more basic solution, not a stronger acid. The pH scale measures the acidity or alkalinity of a solution, with a pH of 7 being neutral, pH values below 7 indicating acidity, and pH values above 7 indicating alkalinity.

  • Therefore, this statement is incorrect.


(ii) Higher the pH, weaker the acid:


  • This statement is correct. As the pH of a solution increases, the concentration of hydrogen ions (H+) decreases, and therefore the acidity decreases. A higher pH indicates a weaker acid.


(iii) Lower the pH, stronger the base:


  • This statement is incorrect. As mentioned earlier, a lower pH indicates a more acidic solution, not a stronger base. A stronger base would have a higher pH.


(iv) Lower the pH, weaker the base:


  • This statement is correct. A lower pH indicates a higher concentration of hydrogen ions (H+), which makes the solution more acidic and therefore weaker as a base.


Therefore, the correct statement is (ii) and (iv), which means the answer is D.
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Which of the following statements is correct about an aqueous solution of an acid and of a base?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(in) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is correct about an aqueous solution of an acid and of a base?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(in) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Which of the following statements is correct about an aqueous solution of an acid and of a base?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(in) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct about an aqueous solution of an acid and of a base?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(in) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer?.
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