Answer:

water is neutral towards litmus paper .. acid turns litmus paper blue .. base turns litmus red

Verified answer

Answer:

We can identify the content in each of the test tubes using red litmus paper. This can be done by noticing the colour change of the red litmus paper.

• On litmus paper, few drops of the three solutions in the test tubes are added separately.
• The solution which turns red litmus paper to blue contains a basic solution.
• Divide the obtained blue litmus paper into two parts.
• The solution from the test tube which turns blue litmus paper to red will be the acidic solution.
• Solution of the test tube which do not change either red or blue litmus paper contain water.

Explanation:

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