state gov BSSC Laboratory Assistant Mock Test Series 2025 Chemistry d And f - Block Elements The Transition Elements (d-Block)
Consider the following reactions
\(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \xrightarrow[-\mathrm{H}_{2} \mathrm{O}]{\mathrm{KOH}}[\mathrm{~A}] \xrightarrow[-\mathrm{H}_{2} \mathrm{O}]{\mathrm{H}_{2} \mathrm{~S}_{4}}[\mathrm{~B}]+\mathrm{K}_{2} \mathrm{SO}_{4}\)
The products [A] and [B], respectively are :
1
K2Cr(OH)6 and Cr2O3
2
K2CrO4 and Cr2O3
3
K2CrO4 and K2Cr2O7
4
K2CrO4 and CrO