The blue colour produced on adding H 2 O 2 to ice cold acidified K 2 Cr 2 O 7 is due to…

Chemistry · NEET · NTA Exams — d- and f- Block Elements

1. CrO₅
2. CrO₄^2-
3. CrO₃
4. Cr₂O₃

Answer

(A) CrO 5

Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.

Related practice questions

• Cobalt salt + KNO _ 2 + CH _ 3 COOH Yellow ppt. The yellow precipitate is:
• In the periodic table, metals usually used as catalysts belong to:
• An unknown inorganic compound (A) gave the following reactions: The compound (A) on heating gave a residue…
• A red solid is insoluble in water. However it becomes soluble if some KI is added to water. Heating the red…
• The E Θ values for Al + /Al = +0.55 V and Tl + /Tl = -0.34 V Al 3+ /Al = -1.66 V and Tl 3+ /Tl = +1.26 V…
• A red solid is insoluble in water. However, it becomes soluble, if some KI is added to water. Heating the red…
• Which of the following ions in aqueous solution is not coloured?
• Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii?…

More d- and f- Block Elements questions · Browse all practice questions