Question

noticed Yellow spots of vegetable on his shirt. When he immersed his shirt into soap solution the yellow colour of spot changed into red. Why had it happened ​

Answer 1

Due to basic nature of soap solution. .......

Answer 2

The yellow spots of vegetable are basically tumeric solution and turmeric is a natural indicator which turns into a bright red color when dipped in an alkaline ( basic ) solution.

Explanation:

Turmeric is a very common Indian spice and it is also used as a natural indicator. When a solution of turmeric falls on a neutral or acidic substance, it remains yellow, while it turns bright red when dipped into an alkaline ( basic ) solution.

There are various other natural indicators found in nature like

• red cabbage
• onion
• tomato
• beetroot
• cherry
• turnip skin, etc.

These natural indicators are found in nature and are used to indicate whether a solution is acidic or basic.