Oxidation of toluene with $CrO_3$ in the presence of $(CH_3CO)_2O$ gives a product '$A$' which on treatment with aqueous $NaOH$ produces

Which of the following compounds does not give the iodoform test?

Explain the statement: "The $\alpha$-hydrogen of an aldehyde and ketone is acidic."

Identify the compounds $A$ and $B$ involved in the formation of the given aldol product: $A + B \xrightarrow{OH^-} CH_3-CH_2-CH(OH)-CH(CH_3)-CHO$

Consider the following sequence of reactions.
$C_6H_5COONa$ $\xrightarrow[\Delta]{NaOH/CaO} X$ $\xrightarrow[\text{Anhy. } AlCl_3]{CO/HCl} Y$ $\xrightarrow[NaOH]{\text{conc. }} A + B$.
If $A$ is the reduction product of $Y$,what is $B$?

Number of molecules from the following which cannot give the iodoform reaction is $:$ Ethanol,Isopropyl alcohol,Bromoacetone,$2-$Butanol,$2-$Butanone,Butanal,$2-$Pentanone,$3-$Pentanone,Pentanal,and $3-$Pentanol.