Question

Ek hi lichens se do color ke litmus papar kaise banata hai

Answer 1

Answer:

Nice question!!! This shows that you are very inquisitive.

Pahle ham lichen se ek solution obtain karte hai jo neutral hota hai.

Phir hum usme koi base add karte hai eshe uska colour blue ho jata hai and we pour that new formed solution on filter paper. Bus ban gaya blue litmus paper.

Aab red litmus paper ke liye hum acid ko solution mai dalte hai uska colour red ho jata hai. Pour thatnew formed solution on filter paper. Red litmus is formed.

Understood???