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Q. |
Oil of vitriol is - |
A. | nitric acid |
B. | sulfuric acid |
C. | hydrochloric acid |
D. | phosphoric acid |
Answer» B. sulfuric acid | |
Explanation: Sulfuric acid or was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" in an iron retort. |
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