Chemistry
A few drops of universal indicator are added to colourless solution A, B, C and D with pH 2, 10, 9 and 7 respectively. Which of the following test tube is labelled with incorrect colour ?
Acids Bases Salts
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Answer
pH 10
Reason —
Universal indicator colour range.
| pH | Colour |
|---|---|
| 0 - 3 | Red |
| 4 - 6 | Orange to yellow |
| 7 | Green |
| 8 - 11 | Blue |
| 12 - 14 | Purple/ Violet |
Option 2 is labelled incorrectly, it should be labelled as blue.
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