Among tomato juice, soap solution, pure water and baking soda solution, which substance will be neutral?
Answer and explanation
Correct answer: Pure water
A neutral solution has approximately equal hydrogen-ion and hydroxide-ion concentrations and is represented by pH 7 under standard conditions. Pure water is generally treated as neutral, so option B is correct. Tomato juice contains acids and is acidic, while soap solution and sodium hydrogen carbonate solution are basic. The word “pure” matters because dissolved impurities can change the pH of ordinary water.
Frequently asked questions
What is the correct answer to this question?
Pure water
Why is this the correct answer?
A neutral solution has approximately equal hydrogen-ion and hydroxide-ion concentrations and is represented by pH 7 under standard conditions. Pure water is generally treated as neutral, so option B is correct. Tomato juice contains acids and is acidic, while soap solution and sodium hydrogen carbonate solution are basic. The word “pure” matters because dissolved impurities can change the pH of ordinary water.
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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