Question

In which colour does the turmeric turn into in the presence of bases?

Answer 1

Few substances have the property to distinguish between the presence of acid and base. These substances help us to distinguish acid from bases or bases from acid just by observing the change in their physical properties like colour and one such example is of turmeric.

Complete answer:
Let's now proceed with this question by understanding the basic properties of the turmeric.
So, actually turmeric powder is obtained from the rhizomes of the plant Turmeric. The roots are dried and crushed and mixed with the substance, ‘cur cumin’.
Curcumin is the main component of the turmeric and it provides the turmeric with its characteristic yellow colour. It is also a strong antioxidant.
So, turmeric is one of the acid-base indicators i.e. it is the substance that helps us to distinguish between the acid and the base on the basis of the change in their physical properties like colour.
So, turmeric changes its colour from yellow to red in the presence of a basic solution.
Thus, when the turmeric paper is dipped in the basic solution, it changes its colour into red.
While on the other hand turmeric paper does not change its colour in the presence of the acidic solution.

Note:
Turmeric is a common kitchen ingredient which is used in our daily life. And the one example of change in colour of the turmeric in the presence of the basic solution can be observed at home i.e. when we clean the utensil in which we had our lunch containing turmeric then, that utensil’s colour changes into red on coming in contact with a dish washing soap as it is basic in nature.