sulphuric acid colour on pH paper
Litmus paper turns blue in basic solution.
Litmus paper turns red when exposed to an acidic solution and blue when exposed to a basic solution. Common salt (sodium chloride) is neutral, so it does not significantly change the color of litmus paper.
Litmus paper is basically used to test nature of solution i.e acid or alkaline. For acid blue litmus turns to red. But for alkaline red litmus turns to blue color.
So you can tell if the solution is an acid or a base
Red litmus paper turn blue. But blue one is not responding.
An acidic solution will change blue litmus paper to red and basic solutions change red litmus paper to blue
Blue litmus paper will turn red in the presence of an acidic solution, while red litmus paper will turn blue in the presence of an alkaline (basic) solution.
A base.An alkali turns litmus paper blue.The solution is a base.
Blue litmus paper turns red in an acidic solution.
Blue litmus paper turns red in vinegar solution because vinegar is acidic and pH below 7. The acidic solution causes the blue litmus paper to undergo a color change and turn red.
red litmus paper becomes blue in its presnece
An acid solution turns blue litmus red.