Question

What do you mean by red litmus paper and blue litmus paper?

Answer 1

Litmus can be defined as a paper Stained with Litmus dye. Used to show the alkalinity and acidic nature of a substance.
Litmus are of 2 types:- 
1. Blue Litmus- used to show the acidic nature of a solution . It turns red if dipped in acidic solution.
2. Red Litmus- used to show the alkaline nature of a solution . It turns blue if dipped in a alkaline/Basic solution.

Answer 2

Answer:

Explanation:

they are both indicators