Advertisements
Advertisements
प्रश्न
What is the name of the indicator which can be used for testing the pH of a solution?
उत्तर
A universal indicator shows different colours at different concentrations of hydrogen ions in a solution and can be used for testing the pH of a solution.
APPEARS IN
संबंधित प्रश्न
Fresh milk from cows has a pH of 6. So how does the pH change when this milk is turned to curd? Explain your answer.
What colour do the following indicators turn when added to a base or alkali (such as sodium hydroxide)?
litmus
Name an indicator which is red in acid solution but turns blue in basic solution.
Why does tooth decay start when the pH of mouth is lower than 5.5?
Fill in the following blank with suitable words:
Neutral substances have a pH of ................
What is a universal indicator? For what purpose is it used?
The pH values of five solutions A, B, C, D and E are given below:
| A | 1 |
| B | 5 |
| C | 7 |
| D | 11 |
| E | 13 |
Add a few drops of hibiscus indicator to the soap solution. What do you observe?
What is the colour of phenolphthalein in the basic solution?
Give names of any two natural indicators.
