Question

Turmeric...... and....... proper are natural indicator​

Answer 1

This activity uses turmeric, a common spice in curry, as an indicator for acidity and basicity. Turmeric is yellow in acid and neutral substances, but turns bright red with bases. Learners can use their indicator to test household chemicals and determine which are basic.

Answer 2

Curcumin is the main component of turmeric extracts which expresses a yellow color in acid and/or neutral medium while presenting as orange or reddish-brown in the base condition [24], [25], [26] as a natural pH indicator. Traditionally, lime (hydrated lime) was generated by calcining shells at a boiling temperature.

Hope it helps....