Consider the following reactions

$Y$ can not be obtained from which of the following reaction?

Assertion (A) : Carboxylic acids are more acidic than phenols

Reason (R) : Resonance structures of carboxylate ion are equivalent, while resonance structures of phenoxide ion are not equivalent.

In the reaction sequence $Y$ is

$$ \mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H} \xrightarrow[(2) \Delta]{(1) \mathrm{NH}_3} P \xrightarrow{\mathrm{Br} / \mathrm{NaOH}} Y $$

What are $X$ and $Y$ respectively in the following reactions?

What are $A$ and $B$ in the following reaction sequence ?

$$ \mathrm{CH}_3 \mathrm{COOH} \xrightarrow{A} X \xrightarrow[\mathrm{H}^{+}]{Y} B \text { (Analgesic drug) } $$

$$ \text { Benzamide } \xrightarrow{\mathrm{Br}_2 / \mathrm{NaOH}} X \xrightarrow[\text { Alc. } \mathrm{KOH}]{\mathrm{CHCl}_3} Y $$

The conversion of $X$ to $Y$ is

An aryl carboxylic acid on treatment with sodium hydrogen carbonate liberates a gaseous molecule. Identify the gas molecule liberated.

In the presence of peroxide, styrene reacts with HBr to give $$X$$. When $$X$$ is reacted with magnesium in dry ether followed by $$\mathrm{CO}_2$$ and hydrolysis gave $$Y$$. Treatment of Y with $$\mathrm{PCl}_5$$ and then next with $$\mathrm{H}_2$$. $$\mathrm{Pd}-\mathrm{BaSO}_4$$ gave Z . What is Z ?

The correct order of acidic strength among the following is