Question : Which of the following is a natural acid-base indicator?
I. Litmus
II. Turmeric
Option 1: Only II
Option 2: Only I
Option 3: Neither I nor II
Option 4: Both I and II
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Correct Answer: Both I and II
Solution : The correct answer is Both I and II .
Both litmus and turmeric are natural acid-base indicators.
I. Litmus is a natural indicator used to test for the presence of acids or bases. It turns red in the presence of an acid and blue in the presence of a base.
II. Turmeric is another natural indicator that changes colour when exposed to acidic or alkaline solutions. It turns red in acidic solutions and yellow in alkaline solutions.
These natural indicators are often used in laboratory experiments and various applications to determine the acidity or alkalinity of substances.
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