Alcohol, Phenols and Ethers

$\text{C}_3\text{H}_6 \xrightarrow{\large{(i)\text{ BH}_3;\ (ii)\text{ H}_2\text{O}_2/\text{NaOH}}} P \xrightarrow{\large{\text{CrO}_3,\text{ anhydrous medium}}} Q \xrightarrow{\large{(i)\text{ CH}_3\text{MgBr};\ (ii)\text{ H}_2\text{O}}} R...

$R-\text{CH}_2\text{OH}$ is converted into $R-\text{CHO}$ by reacting with ________.

Glycerol is a trihydric alcohol. It contains ____.

The correct IUPAC name of is

Ethyl alcohol is heated with concentrated sulphuric acid at 413 K . The major product

\(A \text { and } B \text { respectively are }\)

Phenol can be distinguished from propanol by using the reagent

\(\text { Match the following with their } \mathrm{pKa} \text { values }\)



Acid
pKa


(I) Phenol
(a) 16


(II) p-Nitrophenol
(b) 0.78


(III) Ethyl alcohol
(c) 10


(IV) Picric acid
(d) 7.1

When a tertiary alcohol ' $A^{\prime}\left(\mathrm{C}_4 \mathrm{H}_{10} \mathrm{O}\right)$ reacts with $20 \% \mathrm{H}_3 \mathrm{PO}_4$ at 358 K , it gives a compound ' $B^{\prime}\left(\mathrm{C}_4 \mathrm{H}_8\right)$ as a major product...

8.8 g of monohydric alcohol added to ethyl magnesium iodide in ether liberates $2240 \mathrm{~cm}^3$ of ethane at STP. This monohydric alcohol when oxidised using pyridinium-chloro-chromate, forms a carbonyl compound that answers silver mir...

PCC is

Y in the above reaction is

A better reagent to oxidise primary alcohols into aldehyde is

$$\begin{aligned} & \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH} \stackrel{\mathrm{PCC}}{\longrightarrow} \\\\ & \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO} \end{aligned}$$
Hybridisation change involved at $$\mathr...

Which is most VISCOUS?

Among the following, the products formed by the reaction of anisole with \(\mathrm{HI}\) are

The major product obtained when ethanol is heated with excess of conc. \(\mathrm{H}_2 \mathrm{SO}_4\) at \(443 \mathrm{~K}\) is

In Kolbe's reaction the reacting substances are

An organic compound with molecular formula \(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\) dissolves in \(\mathrm{NaOH}\) and gives a characteristic colour with \(\mathrm{FeCl}_3\). On treatment with bromine, it gives a tribromo derivative $$\math...

A compound \('A' \left(\mathrm{C}_7 \mathrm{H}_8 \mathrm{O}\right)\) is insoluble in \(\mathrm{NaHCO}_3\) solution but dissolve in \(\mathrm{NaOH}\) and give a characteristic colour with neutral \(\mathrm{FeCl}_3\) solution. When treated wi...

The major product of the following reaction is
\(\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2-\mathrm{OH} \xrightarrow[\text { Excess }]{\mathrm{HBr}} \text { Product }\)

The steps involved in the conversion of propan -2-ol to propan -1-ol are in the order

Which of the following on heating gives an ether as major products?
(P) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Br}+\mathrm{CH}_3 \mathrm{ONa}\)
(Q) \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{ONa}+\mathrm{CH}_3 \mathrm{Br}\)
(R) $$\left(...

Match the following acids with their \(pKa\) values :

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Which of the following can be used to test the acidic nature of ethanol?

Phenol can be distinguished from ethanol by the reagent

What is the increasing order of acidic strength among the following?

(i) p-methoxy phenol
(ii) $p$-methyl phenol
(iii) $p$-nitro phenol

The products $X$ and $Z$ in the following raction sequence are

In the following sequence of reactions
\(\mathrm{CH}_3 \mathrm{Br} \xrightarrow{\mathrm{KCN}} A \xrightarrow{\mathrm{H}_3 \mathrm{O}^{-}} B \xrightarrow{\mathrm{LiAl} / \mathrm{H}_4}\)
The end product $C$ is

The product formed during the following reaction are

Which of the following reagent cannot be used to oxidise primary alcohols to aldehydes?

Which of the following order is true regarding the acidic nature of phenol?