question_answer

In the Liebermann's nitroso reaction, sequential changes in the colour of phenol occurs as [AFMC 1998; BHU 1999]

A)                 Brown or red \[\to \] green \[\to \] red \[\to \] deep blue

B)                 Red \[\to \] deep blue \[\to \] green

C)                 Red \[\to \] green \[\to \] white

D)                 White \[\to \] red \[\to \] green