Violet colour of universal indicator indicates which type of solution?
Answer and explanation
Correct answer: Strongly basic solution
Universal-indicator colours are linked to the pH scale. Violet or purple occurs near the high-pH end, where hydroxide-ion concentration is relatively high and the solution shows strong basicity. Consequently, option C is correct. Acidic solutions have pH values below 7 and usually give yellow-to-red shades, while a neutral solution near pH 7 is green. A slightly acidic solution cannot normally produce the violet colour associated with strong alkalinity.
Frequently asked questions
What is the correct answer to this question?
Strongly basic solution
Why is this the correct answer?
Universal-indicator colours are linked to the pH scale. Violet or purple occurs near the high-pH end, where hydroxide-ion concentration is relatively high and the solution shows strong basicity. Consequently, option C is correct. Acidic solutions have pH values below 7 and usually give yellow-to-red shades, while a neutral solution near pH 7 is green. A slightly acidic solution cannot normally produce the violet colour associated with strong alkalinity.
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.
