An aromatic compound 'A' (Molecular formula $C_8{H}_{8}O$) gives positive $2,4$-DNP test. It gives a yellow precipitate of compound '$B$' on treatment with iodine and sodium hydroxide solution. Compound '$A$' does not give Tollen's or Fehling's test. On drastic oxidation with potassium permanganate it forms a carboxylic acid '$C$' (Molecular formula $C_7{H}_6{O}_2$), which is also formed along with the yellow compound in the above reaction. Identify $A$, $B$ and $C$ and write all the reactions involved.

Q. An aromatic compound $\left(X\right)$ $\left(C_8{H}_{8}O\right)$ gives positive 2,4-DNP test. It gives a yellow precipitate of compound $\left(Y\right)$ on reaction with iodine and sodium hydroxide solution. $\left(X\right)$ does not give Tollen's test on oxidation under drastic conditions. It gives a carboxylic acid $\left(Z\right)$ $\left(C_7{H}_6{O}_2\right)$. $\left(Z\right)$ is also formed with $\left(Y\right)$ during the reaction. $\left(X\right),\left(Y\right)$ and $\left(Z\right)$ respectively are:

Q. An organic compound (A) with molecular formula $C_8{H}_{8}O$ forms an orange-red precipitate with 2,4 DNP and gives a yellow precipitate of compound (B) on treatment with iodine and sodium hydroxide solution. Compound (A) does not give Tollen's or Fehling test but on drastic oxidation with potassium permanganate, it gives (C) which on reaction with thionyl chloride gives a compound (D) having formula $C_7{H}_{5}OCl$. (D) on reaction with compound (E) having general formula $R_{2}Cd$ gives back (A)/ Identify (A), (B), (C), (D) and (E). Also, give chemical equations for the reaction involved.

Q. An organic compound (A) with molecular formula $C_8{H}_{8}O$ forms an orange-red precipitate with $2,4-\text{DNP}$ reagent and gives yellow precipitate on heating with iodine in the presence of sodium hydroxide. It neither reduces Tollens' or Fehling's reagent, nor does it decolourise bromine water or Baeyer's reagent. On drastic oxidation with chromic acid, it gives a carboxylic acid (B) having molecular formula $C_7{H}_6{O}_2$. Identify the compounds (A) and (B) and explain the reactions involved.

Q. A compound $\left(X\right)$ with a molecular formula $C_5{H}_{10}O$ gives a positive 2,4-DNP test but a negative Tollen's test. On oxidation it gives a carboxylic acid $\left(Y\right)$ with a molecular formula $C_3{H}_6{O}_2$. Potassium salt of $\left(Y\right)$ undergoes Kolbe's reaction and gives a hydrocarbon $\left(Z\right)$ Identify $\left(X\right).\left(Y\right)$ and $\left(Z\right)$.

Q. An organic compound $\left(X\right)$ with molecular formula $C_9{H}_{10}O$ gives positive 2,4-DNP and Tollen's tests. It undergoes Cannizzaro reaction and on vigorous oxidation it gives 1,4-benzene dicarboxylic acid. Compound $\left(X\right)$ is: