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

The major product in the following reaction is

Identify the final product in the following reaction:
$CH_3-CH(OH)-COOH \xrightarrow{\Delta} \text{Product}$

The product $(P)$ of the given reaction is:

The number of methoxy groups in a compound can be determined by treating it with

Give plausible explanation for each of the following:
$(i)$ Cyclohexanone forms cyanohydrin in good yield but $2,2,6-$trimethylcyclohexanone does not.
$(ii)$ There are two $-NH_2$ groups in semicarbazide. However,only one is involved in the formation of semicarbazones.
$(iii)$ During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst,the water or the ester should be removed as soon as it is formed.