Arrange the following compounds in increasing order of their enol content:
$1. CH_3CHO$
$2. CH_3COCH_3$
$3. CH_3COCH_2CHO$
$4. CH_3COCH_2COCH_3$

Which of the products is formed when acetone is reacted with barium hydroxide solution?

The reaction is given as follows: $(CH_3)_2CHCHO + CH_3MgBr$ $\xrightarrow{Ether} A$ $\xrightarrow{H_3O^+} B$. The $IUPAC$ name of $B$ is:

Given below are two statements :
Statement $I :$ The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion.
Statement $II :$ The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product.
In the light of the above statements,choose the most appropriate answer from the options given below :

Which among the following compounds does not exhibit the iodoform test?

What is the final product of this reaction?