The reaction shown in the image is called:

Arrange the following in increasing order of their acidic strength:

Which of the following is reduced by $Zn-Hg/HCl$ to give the corresponding hydrocarbon?

The product of the following reaction is $C_6H_5CHO + CH_3CH_2CHO \xrightarrow[\Delta]{\text{Dil. NaOH}}$

In the given reaction,what will be $A$ and $B$ respectively?
$(CH_3)_2CO$ $\xrightarrow{NaCN/HCl} A$ $\xrightarrow{H_3O^+} B$

$A$ compound $A$ has the molecular formula $C_2Cl_3OH$. It reduces Fehling's solution and on oxidation,it gives a monocarboxylic acid $B$. Compound $A$ is also obtained by the reaction of ethanol with chlorine. What is $A$?