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 exhibit the following properties:- Blue litmus paper turns red in their presence.- They possess a sour taste.- They react with metals, yielding hydrogen gas.Answer: Consequently, the defining characteristic of acids is their ability to turn blue litmus paper red. Thus, option (1) is the correct answer.