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The iron salt used in blue prints is :...

The iron salt used in blue prints is :

A

`FeC_(2)O_(4)`

B

`Fe_(2)(C_(2)O_(4))_(3)`

C

`K_(4)Fe(CN)_(6)`

D

`FeSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
`2CrO_(4)^(2-) +2H^(+) to Cr_(2)O_(7)^(2-) +H_(2)O`
`Cr_(2)O_(7)^(2-)+2OH^(-)+2CrO_(7)^(2-)+H_(2)O`
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