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You are provided with three test tubes A, B and C as shown in figure 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?
Test tube | Effect on blue litmus paper | Effect on red litmus paper | Effect on phenolphthalein solution |
A | turns red | no change | colourless |
B | no change | turns blue | turns pink |
C | no change | no change | colourless |
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