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Which of the following is not used in making matchsticks these days ? (a) potassium chlorate (b) white phosphorus (c) antimony trisulphide (d) red phosphorus |
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Answer» Which of the following is not used in making matchsticks these days ? (a) potassium chlorate (b) white phosphorus (c) antimony trisulphide (d) red phosphorus |
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