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Which of the following is not a method of preparing oxygen?5
Q: Which of the following is not a method of preparing oxygen?
- 1Electrolysis of waterfalse
- 2Fractional distillation of liquid airtrue
- 3Decomposition of potassium permanganatefalse
- 4Decomposition of manganese dioxidefalse
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Answer : 2. "Fractional distillation of liquid air"
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