engineering recuitment UPPSC AE Mock Test 2024 General Science Chemistry Basic Concepts of Chemistry
Consider the following indicator and its color in an acidic medium:
| S.No | Indicator | Colour in an acidic medium |
| 1. | Methyl Orange | Yellow |
| 2. | Methyl red | Red |
| 3. | Phenolphthalein | colorless |
| 4. | Litmus | Red |
Which of the above option is correct?
1
1, 2, and 3
2
2 and 3
3
2, 3, and 4
4
All pairs