Question

Ramu: Making a tea is a chemical change
Somu: When turmeric powder is added to soap solution it changes to red color.
A. Ramu is correct, Somu is incorrect
B. Ramu is incorrect, Somu is correct
C. Both Ramu and Somu are correct
D. Both Ramu and Somu are incorrect

Answer 1

A chemical change may be a chemical reaction that occurs when any substance is subjected to a change in its chemical and physical states. The chemical changes result in the reactants undergoing chemical changes to form new products. Turmeric powder is a spice that can also act as a natural indicator.

Complete answer:
A chemical change is the process in which two or more substances react together to form new products. Making tea is considered a chemical change. This is because it involves the reaction between water and tea leaves, the resultant is the black tea that we get. So, this can be termed as a chemical change. Therefore, Ramu is correct.
Turmeric is a spice that is yellow in color. It is used as an indicator for basic substances. On adding it to a base it changes color from yellow to red. Soap is made of basic solution, so when turmeric is added to it the color changes to red. Therefore, Somu is correct.
Both Somu and Ramu are correct.

Hence, the correct option is C.

Note:
Any change that results in the formation of a new product is termed to be a chemical change. Chemical changes can be classified into chemical reactions that can happen due to the reaction between the reactants. Indicators are substances that give color changes on different pH due to the acidic and the basic conditions.