Advertisements
Advertisements
प्रश्न
Which one of the following can be used as an acid- base indicator by a visually impared student?
विकल्प
Litmus
Turmeric
Vanilla essence
Petunia leaves
उत्तर
Vanilla essence
Explanation -
Vanilla essence is an olfactory inidicator.
APPEARS IN
संबंधित प्रश्न
You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?
Two solutions A and B have pH values of 3.0 and 9.5 respectively. Which of these will turn litmus solution from blue to red and which will turn phenolphthalein from colourless to pink?
What would you expect the pH of pure water to be?
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 |
Here are some results of solutions tested with universal indicator paper:
| Sulphuric acid | : Red |
| Metal polish | : Dark blue |
| Washing-up liquid | : Yellow |
| Milk of magnesia | : Light blue |
| Oven cleaner | : Purple |
| Car batter acid | : Pink |
Arrange the solutions in order of their increasing pH value (starting with the one with the lowest pH).
Hibiscus flower is an example for natural indicator.
How will you prepare natural indicator from turmeric powder?
Acids and bases can be identified in the laboratory by ______.
Name any two synthetic acid-base indicators.
How will you prepare a china rose indicator?
