What is the general nature of a solution when its pH is less than 7?
Answer and explanation
Correct answer: Acidic
The governing concept is the pH scale. At approximately 25°C, a solution with pH 7 is considered neutral, values below 7 indicate increasing hydrogen-ion concentration and acidic nature, and values above 7 indicate basic nature. Thus a pH less than 7 identifies an acidic solution, making option A correct. Basic and neutral describe the other pH ranges, while insolubility concerns dissolving and is unrelated to pH.
Frequently asked questions
What is the correct answer to this question?
Acidic
Why is this the correct answer?
The governing concept is the pH scale. At approximately 25°C, a solution with pH 7 is considered neutral, values below 7 indicate increasing hydrogen-ion concentration and acidic nature, and values above 7 indicate basic nature. Thus a pH less than 7 identifies an acidic solution, making option A correct. Basic and neutral describe the other pH ranges, while insolubility concerns dissolving and is unrelated to 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.
