Question

best natural indiacator​

Answer 1

Explanation:

an acid (e.g. vinegar, lemon juice), purple in an alkali (e.g. bicarbonate of soda, bleach) and green in something that is neutral (e.g. water). Many plants contain their own indicators – turmeric, red cabbage juice and beetroot juice are three good examples. Other examples are tea and red grape juice.

Answer 2

A chemical indicator is a material that gives a clear indication of the presence or absence of a threshold concentration of a chemical species such as an acid or basic in a solution by changing colour.

Explanation:

• Turmeric, which we use in our everyday lives to prepare food, can also be utilised as a chemical indicator. When it comes into contact with an acidic medium, it turns yellow. When employed as a basic solution, it turns a brownish-red tint. This is the explanation for why a turmeric stain on a white shirt becomes red when soap is applied to it. A yellow pigment can be found in this spice. Curcumin is a yellow-pH-7.4 to red-pH-8.6 pigment.
• China rose (gurhal) can be found in almost every home. When a basic solution is used with an answer to china rose, the colour changes to green, however when an acidic solution is used, the colour changes to vivid pink or magenta.