If a substance solution feels soapy and turns red litmus blue, what type is it?
Answer and explanation
Correct answer: Basic
A basic solution can feel slippery or soapy because alkaline substances react with oils on the skin, although an unknown chemical must never be touched directly. The decisive test here is that a base changes red litmus to blue. Therefore, option B is correct. Acids generally turn blue litmus red, neutral solutions show no such characteristic change, and carbonate gas is not a suitable category for a solution displaying this indicator response.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
A basic solution can feel slippery or soapy because alkaline substances react with oils on the skin, although an unknown chemical must never be touched directly. The decisive test here is that a base changes red litmus to blue. Therefore, option B is correct. Acids generally turn blue litmus red, neutral solutions show no such characteristic change, and carbonate gas is not a suitable category for a solution displaying this indicator response.
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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