Select a pair of natural indicator from the following

General
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select a pair of natural indicator from the following

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Select a pair of natural indicators from the following

Answer:
Natural indicators are substances that change their color in acidic or basic solutions. Two commonly used natural indicators are:

  1. Litmus: Litmus is a natural dye derived from lichens. It changes color in response to acidic or basic solutions. In an acidic solution, litmus turns red, while in a basic solution, it turns blue.

  2. Turmeric: Turmeric is a yellow-colored spice commonly used in cooking. It contains a compound called curcumin, which acts as a natural pH indicator. Turmeric turns red in acidic solutions and changes to brown or black in basic solutions.

These natural indicators are easy to obtain, cost-effective, and a fun way to demonstrate acid-base reactions in a simple and visual manner.