Alcohol Phenols And Ethers - Organic Chemistry PYQ

In the following reaction sequence, identify product ‘Q’ and reagent ‘R’.

Identify the best suitable reagent for the following reaction.

The correct order of acidity of the following compounds is

Which compound is formed on catalytic hydrogenation of carbon monoxide at high \(p\) and high \(T\) in presence of \(\mathrm{ZnO}-\mathrm{Cr}_2 \mathrm{O}_3\) catalyst?

Identify the product(s) formed in the following reaction.

In which of the following intramolecular H -bonding is absent?

The number of primary $\left(1^{\circ}\right)$, secondary $\left(2^{\circ}\right)$ and tertiary $\left(3^{\circ}\right)$ alcohols possible for the formula $\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O}$ respectively are

The correct order of boiling points of the compounds given below is

(A) methoxy ethane

(B) propan-1-ol

(C) propanal

(D) propanone

The correct statement regarding $X$ and $Y$ formed in the following reaction is

$$\left(\mathrm{CH}_3\right)_3 \mathrm{COC}_2 \mathrm{H}_5 \xrightarrow[\Delta]{\mathrm{HI}} \text { halide }(X)+\text { alcohol }(Y)$$

An alcohol $X\left(\mathrm{C}_4 \mathrm{H}_{10} \mathrm{O}\right)$ on dehydration gave alkene $\left(\mathrm{C}_4 \mathrm{H}_8\right)$ as major product, which on bromination followed by treatment with $Y$ gave alkyne $\mathrm{C}_4 \mathrm{H}_6$. Alkyne $\mathrm{C}_4 \mathrm{H}_6$, does not react with sodium metal. What are $X$ and $Y$ ?

$$\text { Match the following }$$

$$\begin{array}{llll} \hline & \text { List-I (Compound) } & & \text { List-II }\left(\mathrm{pK}_{\mathrm{a}}\right) \\ \hline \text { (A) } & \text { p-nitrophenol } & \text { (I) } & 15.9 \\ \hline \text { (B) } & \text { Phenol } & \text { (II) } & 7.1 \\ \hline \text { (C) } & \text { Ethanol } & \text { (IIII) } & 10.0 \\ \hline \text { (D) } & \text { p-cresol } & \text { (IV) } & 10.2 \\ \hline & & \text { (N) } & 8.3 \\ \hline \end{array}$$

The correct answer is

What are $X$ and $Y$ respectively in the following set of reactions?

An alcohol, $X\left(\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O}\right)$ in the presence of $\mathrm{Cu} / 573 \mathrm{~K}$ gives $Y\left(\mathrm{C}_5 \mathrm{H}_{10}\right)$. The reactants required for the preparation of $X$ are

An alcohol $X\left(\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O}\right)$ on dehydration gives $Y$ (major product). Reaction of $Y$ with HBr gave $Z\left(\mathrm{C}_5 \mathrm{H}_{11} \mathrm{Br}\right)$, major product). $Z$ undergoes nucleophilic substitution in two steps. What are $X$ and $Y$ ?