Aldehydes, Ketones and Carboxylic Acids
Monocyclic compounds $\mathbf{P}, \mathbf{Q}, \mathbf{R}$ and $\mathbf{S}$ are the major products formed in the reaction sequences given below.
The product having the highest number of unsaturated carbon atom(s) is :
P
Q
R
S
In the following reaction sequence, the major product $\mathbf{Q}$ is
List-I contains various reaction sequences and List-II contains the possible products. Match each entry in List-I with the appropriate entry in List-II and choose the correct option.
| List-I | List-II |
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| List - I | List - II |
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| (P) Etard reaction | (1) Acetophenone $\stackrel{\mathrm{Zn}-\mathrm{Hg}, \mathrm{HCl}}{\longrightarrow}$ |
| (Q) Gattermann reaction | (2) $ \text { Toluene } \underset{\text { (ii) } \mathrm{SOCl}_2}{\stackrel{\text { (i) } \mathrm{KMnO}_4, \mathrm{KOH}, \Delta}{\longrightarrow}} $ |
| (R) Gattermann-Koch reaction | (3) $ \text { Benzene } \underset{\text { anhyd. } \mathrm{AlCl}_3}{\stackrel{\mathrm{CH}_3 \mathrm{Cl}}{\longrightarrow}} $ |
| (S) Rosenmund reduction | (4) $ \text { Aniline } \underset{273-278 \mathrm{~K}}{\stackrel{\mathrm{NaNO}_2 / \mathrm{HCl}}{\longrightarrow}} $ |
| (5) $ \text { Phenol } \stackrel{\mathrm{Zn}, \Delta}{\longrightarrow} $ |
The correct option is
The compound S is
The compound R is
and anhydrous $\mathrm{AlCl}_3$.
The correct order of acidity for the following compounds is
The major product of the following reaction sequence is:
The major product in the following reaction is
Different possible thermal decomposition pathways for peroxyesters are shown below. Match each pathway from List I with an appropriate structure from List II and select the correct answer using the code given below the lists.
Compounds formed from P and Q are, respectively,
In the following reaction sequences V and W are, respectively,
The major product H of the given reaction sequence is
$C{H_3} - C{H_2} - CO - C{H_3}\buildrel {\overline C N} \over \longrightarrow G\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{Heat}^{95\% \,{H_2}S{O_4}}} H$
The compound that undergoes decarboxylation most readily under mild condition is
The compound K is
The carboxyl functional group ($-$COOH) is present in
The number of aldol reactions that occur in the given transformation are
The number of optically active products obtained from the complete ozonolysis of the given compound is ______.
The structure of compound P is
The structure of the compound Q is
Match each of the compounds given in Column I with the reaction(s), that they can undergo, given in Column II.
| Column I | Column II | ||
|---|---|---|---|
| (A) |  |
(P) | Nucleophilic substitution |
| (B) |  |
(Q) | Elimination |
| (C) |  |
(R) | Nucleophilic addition |
| (D) |  |
(S) | Esterification with acetic anhydride |
| (T) | Dehydrogenation |
The structure of the carbonyl compound P is
The structures of the products Q and R, respectively, are
The structure of the product S is
In the following reaction sequence, the correct structure of E, F and G are :
The structure of the product I is :
The structure of compounds J and K, respectively, are:
The structure of product L is :
Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is :
Match the compounds/ions in Column I with their properties/reactions in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 $\times$ 4 matrix given in the ORS.
| Column I | Column II | ||
|---|---|---|---|
| (A) | $\mathrm{C_6H_5CHO}$ | (P) | gives precipitate with 2, 4-dinitrophenylhydrazine |
| (B) | $\mathrm{CH_3C\equiv CH}$ | (Q) | gives precipitate with $\mathrm{AgNO_3}$ |
| (C) | $\mathrm{CN^-}$ | (R) | is a nucleophile |
| (D) | $\mathrm{I^-}$ | (S) | is involved in cyanohydrin formation |
Statement 1 : p-Hydroxybenzoic acid has a lower boiling point than o-hydroxybenzoic acid.
Statement 2 : o-Hydroxybenzoic acid has intramolecular hydrogen bonding.
An organic compound $\mathbf{P}$ having molecular formula $\mathrm{C}_6 \mathrm{H}_6 \mathrm{O}_3$ gives ferric chloride test and does not have intramolecular hydrogen bond. The compound $\mathbf{P}$ reacts with 3 equivalents of $\mathrm{NH}_2 \mathrm{OH}$ to produce oxime $\mathbf{Q}$. Treatment of $\mathbf{P}$ with excess methyl iodide in the presence of $\mathrm{KOH}$ produces compound $\mathbf{R}$ as the major product. Reaction of $\mathbf{R}$ with excess iso-butylmagnesium bromide followed by treatment with $\mathrm{H}_3 \mathrm{O}^{+}$gives compound $\mathbf{S}$ as the major product.
The total number of methyl $\left(-\mathrm{CH}_3\right)$ group(s) in compound $\mathbf{S}$ is ___.
Explanation:
$\therefore$ Sum of oxygen atoms in $\mathrm{S}$ and $\mathrm{T}=1+1=2$
Explanation:
$\begin{aligned} & \text { Molecular mass of polymers }=(104 \times 500)+(118 \times 500)-18 \times 999 \\\\ & =52000+59000-17982=93018\end{aligned}$
Complete reaction of acetaldehyde with excess formaldehyde, upon heating with conc. $\mathrm{NaOH}$ solution, gives $\mathbf{P}$ and $\mathbf{Q}$. Compound $\mathbf{P}$ does not give Tollens' test, whereas $\mathbf{Q}$ on acidification gives positive Tollens' test. Treatment of $\mathbf{P}$ with excess cyclohexanone in the presence of catalytic amount of $p$-toluenesulfonic acid (PTSA) gives product $\mathbf{R}$.
Sum of the number of methylene groups $\left(-\mathrm{CH}_2-\right)$ and oxygen atoms in $\mathbf{R}$ is __________.
Explanation:
Number of $\mathrm{CH}_2$ groups in $\mathrm{R}=14$
Number of $\mathrm{O}$-atoms $=4$
Required Answer $=14+4=18$