The increasing order of the acidity of the following carboxylic acids is:

Which is the major product of the following reaction?

Which of the following compounds evolves $2 \ mole$ of $CO_2$ on gentle heating?

The acid strength of the active methylene group in
$(a)$ $CH_3COCH_2COOC_2H_5$
$(b)$ $CH_3COCH_2COCH_3$
$(c)$ $C_2H_5OOCCH_2COOC_2H_5$
decreases as:

Identify the product $A$ in the following reaction:
(Image of a tricyclic allylic alcohol reacting with $p$-benzoquinone in the presence of $[(CH_3)_3CO]_3Al$ to form $A$)

$CH_3-C(=O)-OH$ $\xrightarrow{NaH^{14}CO_3} (A) (\text{gas})$ $\xrightarrow[(ii) H_3O^{+}]{(i) PhMgBr} (B)$
$CH_3-S(=O)_2-OH$ $\xrightarrow{NaH^{14}CO_3} (C) (\text{gas})$ $\xrightarrow[(ii) H_3O^{+}]{(i) PhMgBr} (D)$
Product $(B)$ and $(D)$ in the above reaction are: