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D and F Block Elements question

2023 · 30 Jan · Shift 1 · Q8
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D and F Block Elements question

2023 · 30 Jan · Shift 1 · Q8

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
During the qualitative analysis of SO32−\mathrm{SO}_{3}^{2-}SO32−​ using dilute H2SO4,SO2\mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{SO}_{2}H2​SO4​,SO2​ gas is evolved which turns K2Cr2O7\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}K2​Cr2​O7​ solution (acidified with dilute H2SO4\mathrm{H}_{2} \mathrm{SO}_{4}H2​SO4​) :
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