Which of the following is the example of natural indicator ?
(A) Indigo
(B) Turmeric
(C) Chilli
(D) Chlorophyll
Answers
Answer: Turmeric (option B)
Explanation: Turmeric compound is a naturally occurring yellow colour compound. It is an acid -base indicator, turmeric compound remines yellow when acid or neutral solutions are added to it. When basic solutions such as sodium hydroxide is added to it, the solution turns to pinkish red.
Answer:
(B) Turmeric
Explanation:
Turmeric is used as a natural indicator. It is added to the solution to determine its acidity and basicity. The turmeric is acidic in nature and it is yellow in color. When turmeric paste is added to the acidic solution, it remains unchanged. The color in the acidic solution is yellow. When turmeric paste is added to the basic solution the yellow color changes to red color due to the neutralization reaction.