Product $(C)$ is

$CH_3-CHO + CH_3-MgBr$ $\rightarrow \text{Product}$ $\xrightarrow{H_2O} A$. What is $A$?

Compound $P$ $(C_{8}H_{8}O)$ gives a red-orange precipitate with $2,4-DNP$ reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, $P$ gives an aromatic product $Q$ that produces effervescence on treating with aqueous $NaHCO_{3}$. Compound $P$ and $Q$, respectively, are:

The addition of $HCN$ to carbonyl compounds is an example of

Which is the major product formed when acetone is heated with iodine and potassium hydroxide?

Match the List-$I$ with List-$II$.

List-$I$ (Reagents)	List-$II$ (Reaction Name)
$A$. $NH_2-NH_2, KOH$	$I$. Tollen's Test
$B$. $[Ag(NH_3)_2]OH$	$II$. Clemmensen Reduction
$C$. Aq. $CuSO_4$, Sodium Potassium tartarate, $KOH$	$III$. Wolff-Kishner Reduction
$D$. $Zn-Hg, HCl$	$IV$. Fehling's Test

Choose the correct answer from the options given below: