Question

You are given three test-tubes which contain an acidic solution, a basic solution and
distilled water, separately. If you are provided only red litmus paper, how will you identify
the contents of each test-tube?​

Answer 1

Answer:

by the colour of litmus paper

Explanation:

when we dip it changes into blue colour

Answer 2

We are provided with:

• Three test tubes with acidic solution, basic solution and distilled water separately.

• And a piece of red litmus paper.

Knowledge Required:

An acidic solution changes blue litmus to red and a basic solution changes red litmus to blue. No change in case of neutral solution. The litmus can be in the form of paper strips or solution.

How to check?

We have to check and identify among the three liquids, that's high is an acid, a base and a neutral solution.

• First of all, take a one drop each of the three solutions with the help of a dropper and put it in the litmus.

• Only one drop i.e of basic solution will change red litmus to blue and this will change the colour of litmus into blue$.$

• Separate and label this as the basic solution.

• Now we are left with acidic and neutral solution. Again put drops of acidic and neutral solution in the blue strips of litmus(Now which was made).

• The one which will change blue litmus to red, is the acidic solution. The one which didn't show any colour change in both red & blue litmus, is the neutral solution.

➤ Thus, We could easily detect the three different kind of solutions using only the red litmus paper.

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