Pick the best answer to the given question:
Red litmus paper is dipped in a solution and it remains red. What are the possible nature of the solution? Explain.
i. Acid turns .
ii. Acid do not react with paper.
ii. substance does not react with both red and blue litmus paper,
Neutral substances also do not react with any litmus papaer. Acid or a neutral solution both could be the possible nature of the solution.