A solution changes the colour of turmeric indicator from yellow to red. The solution is (a) basic (b) acidic (c) neutral (d) either neutral or acidic

Answer: (a) basic

Turmeric is acidic in nature hence it is converted to red due to neutralization by the base.

Turmeric compound is a naturally occurring yellow colour compound. It is an acid-base indicator, turmeric compound remains yellow when acid or neutral solutions are added to it. When basic solutions such as sodium hydroxide are added to it, the solution turns pinkish-red.

Neutralization reaction

A neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. The chemical equation of neutralization reaction is

acid + base(alkali) → salt + water

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