If a solution has pH close to 14 and feels slippery on skin, what is the safest conclusion?
Answer and explanation
Correct answer: It may be strongly basic and caustic
The pH scale identifies how acidic or basic an aqueous solution is: values near 14 indicate a very strong base. A slippery feel is also commonly associated with alkaline solutions because they react with skin oils, but touching an unknown chemical is unsafe. Therefore option A is correct: it may be strongly basic and caustic. Pure water is near pH 7, a mild acid has pH below 7, and common salt solution is approximately neutral.
Frequently asked questions
What is the correct answer to this question?
It may be strongly basic and caustic
Why is this the correct answer?
The pH scale identifies how acidic or basic an aqueous solution is: values near 14 indicate a very strong base. A slippery feel is also commonly associated with alkaline solutions because they react with skin oils, but touching an unknown chemical is unsafe. Therefore option A is correct: it may be strongly basic and caustic. Pure water is near pH 7, a mild acid has pH below 7, and common salt solution is approximately neutral.
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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