Question

what are the natural indicators? give example of action of two such indicators which you may have observed?​

Answer 1

Answer:

The indicators which are not synthetically prepared are called as natural indicators..

Litmus is said to be the natural indicator...

Example : take a solution of NaOH in a beaker, put a red litmus paper in it in order to check the change... You will observe that the red litmus paper will turn blue.. It is therefore concluded that NaOH solution is basic in nature... Hope it helps you!

Answer 2

Answer:

• The indicators prepared from natural substances are called as natural indicators.
• Some examples are:-

1. Red cabbage
2. Turmeric
3. China rose
4. Litmus
5. Grape juice

• Red cabbage :- Red cabbage turns blue in basic medium and red in acidic medium.
• Turmeric:- Turmeric is yellow in neutral and acidic mediums and red in basic.
• Litmus:- Litmus is red in acidic medium and blue in basic Medium.
• China rose:- It is pink in neutral medium, dark pink in acidic & green in basic medium.