What is the name of the class of products formed in the reaction $RCOOH + H_2N\phi \rightarrow RCONH\phi$? [Here $\phi = C_6H_5$]

The descending order of acidity for the following carboxylic acids is:
$A.$ $CH_3COOH$
$B.$ $F_3C-COOH$
$C.$ $ClCH_2-COOH$
$D.$ $FCH_2-COOH$
$E.$ $BrCH_2-COOH$
Choose the correct answer from the options given below:

Identify the correct order of boiling points of the following compounds: $CH_3CH_2CH_2CH_2OH$ $(1)$,$CH_3CH_2CH_2CHO$ $(2)$,$CH_3CH_2CH_2COOH$ $(3)$.

Arrange the following acids in decreasing order of acidity:
$(I) CH_3CH_2COOH$
$(II) CH_2 = CH - COOH$
$(III) HC \equiv C - COOH$

The decreasing order of acidity of the following benzoic acid derivatives is:

Which one of the following compounds possesses the most acidic hydrogen $?$