1.

Which of the following is/are redox reaction

Answer»

`KCl+K_(2)Cr_(2)O_(7)+con. H_(2)SO_(4)rarrCrO_(2)Cl_(2)+K_(2)SO_(4)+H_(2)O`
`K_(2)Cr_(2)O_(7)+H_(2)O_(2)+con. H_(2)SO_(4)+rarrK_(2)SO_(4)+CrO_(5)+H_(2)O`
`K_(2)Cr_(2)O_(7)+H_(2)O_(2)+dil. H_(2)SO_(4)rarrK_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+7H_(2)O+3O_(2)`
`K_(2)Cr_(2)O_(7)+2KOHrarr2K_(2)CrO_(4)+H_(2)O`

ANSWER :abc


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