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What do you observe when the following substances are heated and then tested with moist blue and red litmus – paper?(a) Sulphur(b) Phosphorus(b) Calcium(d) Magnesium |
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Answer» (a) Sulphur : Blue litmus turns red. (b) Phosphorus : Blue litmus turns red. (c) Calcium : Red litmus turns blue. (d) Magnesium : Red litmus turns blue. |
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