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ही 50, के साथ और कौन सा 3 ८] |'S0, ]कि

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Ans :- Oleum is mixture of H2SO4 and SO3 gas.

Oleum is madeby dissolving Sulfur Trioxide into Sulfuric Acid. Sulfur Trioxide ismadefrom Sulfur Dioxide in the presence of a catalyst. It is used in the oil refining process to make crude oil distillates into higher quality materials.



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