Phenol at $25 \, ^\circ C$ is

Which of the following compounds decolourises $Br_2 / H_2O$ and also gives a positive test with neutral $FeCl_3$?

When phenol is treated with $PCl_5$,the yield of chlorobenzene is generally poor because of the formation of

$Acetophenone$ $\xrightarrow{{HCO_3H}} A$ $\xrightarrow{{H_3O^{+}}} B + C$ $\mathop {\xrightarrow{{Phthalic \, Anhydride}}}\limits_{{H^{+}}} $ Indicator $(D)$
$C$ and $D$ are

Rank the following compounds in order of increasing acidic strength.

Identify the products $[A]$ and $[B]$,respectively in the following reaction: