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Among the following four compoundsA. `d gt c gt a gt b`B. `c gt d gt a gt b`C. `a gt d gt c gt b`D. `b gt a gt c gt d`

Answer» Correct Answer - A
Electron withdrawing groups such as `NO_(2)` increases the acidic strength of phenol by increasing the stabilizing the phenoxide ion while electron releasing group such as `CH_(3)` decrease the acidic strength of phenol by destabilizing the phenoxide ion. `p-`Nitrophenol is more acidic than `m-`notrophenol on account of additional `-R` effect. Thus, the correct of acidic strength is
`p-`nitrophenol `gtm-`nitrophenol `gt`phenol `gt`methylphenol


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