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प्रश्न
Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red.
Name any two substances which can give solutions like B.
उत्तर
Dilute hydrochloric acid and citric fruit juice can give solutions similar to solution B.
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संबंधित प्रश्न
Fill in the blank in the following sentences:
Acids have a ..........................taste and they turn..........................litmus to..........................
What is an olfactory indicator?
Name the scientist who developed the pH scale.
What is the name of the indicator which can be used for testing the pH of a solution?
Fill in the following blank with suitable words:
Alkalis have a pH.............. than 7.
Fill in the following blank with suitable words:
Neutral substances have a pH of ................
When a solution becomes more acidic, does the pH get higher or lower?
Assertion: Methyl orange and phenolphthalein are natural indicators.
Reason: Methyl orange is yellow in colour while phenolphthalein is pink.
What is the colour of phenolphthalein in the basic solution?
Write a note on:
Phenolphthalein
