Question

what is litmus??
PLEASE ANSWER

Answer 1

A natural dye obtained from certain lichens that is red under acidic conditions and blue under alkaline conditions.

Answer 2

Lithmus comes in solutions and also in paper...

It is used to detect weather the given substance is acidic or basic

.....

They comes in 2 colours Red and Blue

When red lithmus turns blue then the substance is basic and when it remains red then the substance is acidic

When blue lithmus turns red then the substance is acidic and when it remains the same then it is basic....

So this how we come to know weather the given substance is acidic or basic....