p -Block elements - ll — Chemistry STD 12 Science — Question
Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Which one is known as oil of vitriol
A
${H_2}S{O_3}$
✓
${H_2}S{O_4}$
C
${H_2}{S_2}{O_7}$
D
${H_2}{S_2}{O_8}$
✓
Answer
Correct option: B.
${H_2}S{O_4}$
b Sulfuric acid whose chemical formula is $H _2 SO _4$ is called as "oil of vitriol" by medieval European chemists because it was prepared by roasting "green vitriol" (iron($II$) sulfate i.e. $FeSO _4$ ) in an iron container.
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