To an acidified dichromate solution- a pinch of Na 2 O 2 is added and shaken- What is observed-A- Bluish-given precipitateB- Blue colourC- Orange colour changing to green directlyD- Copious evolution of oxygen

The correct option is B Blue colour chromium peroxide (blue coloured compound) ...

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Adsorption and Absorption

To an acidifi...

Question

To an acidified dichromate solution, a pinch of Na₂O₂ is added and shaken. What is observed?

Blue colour

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Orange colour changing to green directly

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Copious evolution of oxygen

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Bluish-given precipitate

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