Advertisements
Advertisements
प्रश्न
If a solution changes the colour of litmus from red to blue, what can you say about its pH?
उत्तर
The solution is basic in nature and the pH value will be more than 7.
APPEARS IN
संबंधित प्रश्न
State the inference drawn from the following observations
pH of liquid R is 10. What kind of substance is R?
Complete the table:
| Indicator | Neutral | Acidic | Alkaline |
| Litmus | Purple | ______ | ______ |
| Phenolphthalein | Colourless | ______ | ______ |
State one advantage of using ‘Ph paper’ for measuring the Ph value of an unknown solution.
Name two indicators which can identify the presence of an acid?
Fill in the blank
pH scale was introduced by _________ in 1909.
What is the purpose of the pH scale?
To increase the pH value of neutral solution, we should add
Write the approximate colour of the following sample with the universal indicator: Gastric juice
State the inference drawn from the following observation:
pH of liquid R is 10. What kind of substance is R?
Phenolphthalein and methyl Orange are ______.
