Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Na_2CrO_4 + HCl \longrightarrow H_2Cr_2O_7 + NaCl$
$Na_2CrO_4 + HCl \longrightarrow H_2Cr_2O_7 + NaCl$
- A$A$. for coloured ppt./Black ppt.
- B$B$. for coloured solution.
- C$C$. for clear/colourless solution
- D$D$. for white ppt.
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