Select the correct priority for citation as principal group.

- O | | C - O H > - O | | C - > - O | | C - H > - O H > - S H

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- O | | C - O H > - O | | C - > - O | | C - H > - S H > - O H

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- O | | C - O H > - O | | C - H > - O | | C - > - S H > - O H

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- O | | C - O H > - O | | C - H > - O | | C - > - O H > - S H

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Solution

The correct option is D $- O | | C - O H > - O | | C - H > - O | | C - > - O H > - S H$
In the priority order, aldehyde and alcohol are above ketone and thiol groups respectively.
Hence the correct order is:
$- O | | C - O H > - O | | C - H > - O | | C - > - O H > - S H$

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Similar questions

S H^{-}, A c O^{-}, P h O^{-}, O H^{-}, H_{2} O

Arrange in decreasing order of basicity,

$H_{2} O, O H^{-}, C H_{3} O H, C H_{3} O^{-}$

⊖ S H, A C ⊖ O, P h ⊖ O, ⊖ O H, H_{2} O

\begin{matrix} L i s t - I & L i s t - I I (P) & A l k a n o l & 1. & - O | | C - O H (Q) & A l k a n a l & 2. & - O | | C - (R) & A l k a n o n e & 3. & - O | | C - H (S) & A l k a n o i c a c i d & 4. & - O H \end{matrix}

B + H_{2} O \to A + C . A & C

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