Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Chemistry d And f - Block Elements
Salt A when treated with conc. H2SO4 in presence of chloride salt B, gives orange red vapors. What is salt A?
1
KMnO4
2
K2Cr2O7
3
K2CrO4
4
More than one of the above
5
None of the above