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प्रश्न
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
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उत्तर
- We know that basic and neutral solutions do not change the colour of blue litmus paper. Since blue litmus remains blue after dipping in the solution, the solution is either basic or neutral in nature.
- Put a drop of this solution on a red litmus paper. If it turns blue, the above solution is basic in nature. If no colour change occurs, it is neutral.
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संबंधित प्रश्न
What colour does the following indicator turn when added to an acid (such as hydrochloric acid)?
Litmus
Those substances whose smell (or odour) changes in acidic or basic solutions are called ______ indicators.
How does a universal indicator work?
Name two common antacids.
Someone put some universal indicator paper into vinegar. The pH is 3. What does this tell you about the vinegar?
A solution turns phenolphthalein indicator pink. The most likely pH of this solution will be ______.
Methyl orange gives ______ colour in an acidic solution.
Assertion: Methyl orange and phenolphthalein are natural indicators.
Reason: Methyl orange is yellow in colour while phenolphthalein is pink.
Write a note on:
Litmus
Write a note on:
Methyl orange
