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The yellow colour of turmeric changes to red on addition of soap solution. When substance P is added to turmeric, there is no change in colour. Which of the following is definitely true about substance P?
A. P is an acid.
B. P is not a salt.
C. P is not a base.
D. P is a neutral substance.
Answer:
Turmeric is a natural indicator .
- It changes its colour to red when a base is added.
- It does not indicate any change in colour when an acid , neutral substance or salt is added to it.
Therefore, the correct answer is, C .
