Correct Answer - A::C::D
`Cl^(-)+K_(2)Cr_(2)O_(7)+H^(+) to underset(("Chromyl chloride"))(CrO_(2)Cl_(2))("red-brown vapour") overset(NaOH)to underset("Yellow" ("sodium chromate"))(Na_(2)CrO_(4)) overset((CH_(3)CO O)_(2)Pb)to underset("Lead chromate" ("Yellow"))(PbCrO_(4))`