Comprehension Passage
Chromium is present in the +6 oxidation state in the compound ‘X’. X is orange in colour and on heating gives another compound ‘Y’ which is yellow in colour. X is used to test the presence of chloride ions in a sample in which X producers poisonous Vapours to show the positive test of chloride ions.
How can be converted Y back to X?
1
With KOH
2
With H2SO4
3
With H2O
4
By refluxing with KCl