If pH is less than 7 but not very close to zero, what is the most balanced conclusion about the solution?
Answer and explanation
Correct answer: The solution is acidic but not necessarily highly corrosive
The pH scale expresses hydrogen-ion concentration: pH 7 is neutral, and values below 7 indicate acidity. A value below 7 but far from zero shows an acidic solution, yet pH alone does not prove that it is highly corrosive; concentration and the substance’s properties also matter. Therefore option A is the most careful conclusion. Options B, C, and D contradict the meaning of an acidic pH.
Frequently asked questions
What is the correct answer to this question?
The solution is acidic but not necessarily highly corrosive
Why is this the correct answer?
The pH scale expresses hydrogen-ion concentration: pH 7 is neutral, and values below 7 indicate acidity. A value below 7 but far from zero shows an acidic solution, yet pH alone does not prove that it is highly corrosive; concentration and the substance’s properties also matter. Therefore option A is the most careful conclusion. Options B, C, and D contradict the meaning of an acidic pH.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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