In which pH range is a solution considered basic?
Answer and explanation
Correct answer: Greater than 7
The pH scale indicates the acidic or basic nature of an aqueous solution. At 25°C, pH 7 is neutral, values below 7 are acidic, and values above 7 are basic because hydroxide-ion concentration is relatively greater than hydrogen-ion concentration. Therefore, option C is correct. Option A describes an acidic solution, option B describes neutrality, and option D is only one possible acidic value, not the basic range.
Frequently asked questions
What is the correct answer to this question?
Greater than 7
Why is this the correct answer?
The pH scale indicates the acidic or basic nature of an aqueous solution. At 25°C, pH 7 is neutral, values below 7 are acidic, and values above 7 are basic because hydroxide-ion concentration is relatively greater than hydrogen-ion concentration. Therefore, option C is correct. Option A describes an acidic solution, option B describes neutrality, and option D is only one possible acidic value, not the basic range.
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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