Question

Which of the following is a characteristic property of acids?

• A. They turn blue litmus paper red.
• B. They turn red litmus paper blue.
• C. They are slippery to touch.
• D. They have a bitter taste.

Hint:

Remember: Acids turn blue litmus paper red, while bases turn red litmus paper blue.

Answer 1

The Correct Option is A

Step 1: Recall the characteristic properties of acids Acids are substances that donate protons (\( \text{H}^+ \)) and have the following characteristic properties: - They turn blue litmus paper red. - They have a sour taste. - They react with metals to produce hydrogen gas. Answer: Therefore, the characteristic property of acids is that they turn blue litmus paper red. So, the correct answer is option (1).