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- #Multiple Choice Questions (MCQs)
You are provided with three test tubes A, B and C as shown in Figure 5.3 with different liquids. What will you observe when you put
(a) a piece of blue litmus paper in each test tube.
(b) a piece of red litmus paper in each test tube.
(c) a few drops of phenolphthalein solution to each test tube.
Answers (1)
| Test tube | Effect on blue litmus | Effect on red litmus | Effect on Phenolphthalein Solution |
| A | Turns red | Remains red | Colourless |
| B | Remains Blue | Turns blue | Pink colour |
| C | Remains blue | Remains red | Colourless |
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