Question

Turmeric is a natural indicator that turns

• A. Yellow in acid and pinkish-red in base
• B. Blue in base and red in acid
• C. Yellow in base and pinkish-red in acid
• D. Blue in acid and red in base

Answer 1

The correct option is A

Yellow in acid and pinkish-red in base

Explanation:

Acid-base indicator:

• Acid-base indicators are also known as pH indicators.
• They are substances that change their color with pH.
• They are usually weak acids or bases when dissolved in water and dissociate partially into ions.
• There are some natural indicators such as turmeric, red cabbage as well as china rose.
• When turmeric is added to a basic solution, it turns the yellow color into deep pinkish-red color
• While it remains yellow when added to an acidic solution.

Hence, the correct option is A . Turmeric is a natural indicator that turns yellow in acid and pinkish-red in base.