What happens when `H_(2)O` is treated with acidified solution of `K_(2)Cr_(2)O_(7)` containing some ether?

When H_(2)O_(2) is added to a acidified solution of K_(2)Cr_(2)O_(7) :

What happens when H_(2)O_(2) is shaken with acidified K_(2)Cr_(2)O_(7) solution ?

Acidified solution of K_(2)Cr_(2)O_(7) on treatment with H_(2)O_(2) yields :

When H_(2)O_(2) is shaken with an acidified solution of K_(2)Cr_(2)O_(7) in the presence of ether , the ethereal layer turns blue due to the formation of

What happens when ethylbenzene is heated with acidified K_(2)Cr_(2)O_(7) ?

SO_(2) reduces acidified K_(2)Cr_(2)O_(7) to