In chromyl chloride test for confirmation of Cl- ion, a yellow solution is obtained. Acidification of the solution and…
d & f-Block Elements · Class 12 · JEE Main Previous Year Question
In chromyl chloride test for confirmation of ion, a yellow solution is obtained. Acidification of the solution and addition of amyl alcohol and 10% turns organic layer blue indicating formation of chromium pentoxide. The oxidation state of chromium in that is
- a✓
+6
- b
+5
- c
+10
- d
+3
+6
Practice this question with progress tracking
Want timed practice with adaptive difficulty? Solve this question (and hundreds more from d & f-Block Elements) inside The Crucible, our adaptive practice platform.
More JEE Main d & f-Block Elements PYQs
While preparing crystals of Mohr's salt, dil H2SO4 is added to a mixture of ferrous sulphate and ammonium sulphate, before dissolving this mixture in water, dil H2SO4 is added here to :
NaCl reacts with conc. H2SO4 and K2Cr2O7 to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are :
A and B formed in the following reactions are: CrO2Cl2 + 4NaOH A + 2NaCl + 2H2O A + 2HCl + 2H2O2 B + 3H2O
Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured…
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to