You have been provided with three test tubes. One of them contains distilled water,and the other two contain an acidic solution and a basic solution,respectively. If you are given only red litmus paper,how will you identify the contents of each test tube?

(N/A) $1$. Place a drop of each solution on the red litmus paper. The solution that turns the red litmus paper blue is the basic solution.
$2$. Now,we have two test tubes left: one containing distilled water (neutral) and the other containing an acidic solution.
$3$. Take the identified basic solution and mix a drop of it with a drop of each of the two remaining unknown solutions separately.
$4$. Test these mixtures with the red litmus paper. The mixture that turns the red litmus paper blue indicates that the added solution was neutral (distilled water),as the basic property remains dominant.
$5$. The mixture that does not change the colour of the red litmus paper indicates that the added solution was acidic,as the acid neutralized the base.