What is the nature of a solution with pH greater than 7?
Answer and explanation
Correct answer: Basic
On the usual pH scale, a value greater than 7 means that hydroxide ions are relatively more abundant than hydrogen ions, so the solution is basic or alkaline. Basic solutions can turn red litmus paper blue, and soap solution is a familiar example. Acidic solutions have pH below 7 and neutral solutions have pH about 7; being salty does not by itself determine pH. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
On the usual pH scale, a value greater than 7 means that hydroxide ions are relatively more abundant than hydrogen ions, so the solution is basic or alkaline. Basic solutions can turn red litmus paper blue, and soap solution is a familiar example. Acidic solutions have pH below 7 and neutral solutions have pH about 7; being salty does not by itself determine pH. Therefore option A is correct.
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.
