Alcohols, Phenols and Ethers

Methylated spirit is ethanol mixed with a small amount of which poisonous substance?

Intermolecular dehydration of alcohols to form ethers is also known as:

The common name Catechol is used for which of the following dihydroxybenzenes?

What is the IUPAC name for o-nitrophenol?

The synthesis of methanol from synthesis gas involves a specific catalyst. Which of the following is the reaction equation?

The IUPAC name of quinol is:

To prepare methyl phenyl ether (anisole), which combination is preferred in Williamson's synthesis?

Which of the following describes the IUPAC name for the compound $CH_3-CH(CH_3)-O-CH(CH_3)_2$?

In the reaction of methoxyethane with hot concentrated $HI$, the products are:

The industrial process of preparing phenol by the oxidation of benzene with air in the presence of $V_2O_5$ at 583K is known as:

In the dehydration of alcohols to alkenes, what is the role of concentrated sulfuric acid?

The reaction $R-OH + HX \rightarrow R-X + H_2O$ is an example of:

What is the correct order of reactivity of hydrogen halides towards alcohols?

The boiling point of ethers is much lower than that of alcohols of comparable molecular mass because:

In the chemical sequence shown in the flowchart, Phenol is converted into a final product 'Z' which serves as a vital intermediate for the synthesis of aspirin. Identify the IUPAC name of product 'Z'.

Phenol is more acidic than p-cresol because:

Methanol is industrially prepared by the catalytic hydrogenation of Carbon monoxide in the presence of $ZnO-Cr_2O_3$ at high pressure and temperature. This methanol is also known as:

Hydroboration-Oxidation of propene gives:

Reaction of excess ethanol with concentrated $H_2SO_4$ at $413 K$ produces:

Treatment of phenol with $NaNO_2$ and $HCl$ followed by water gives primarily:

Which of the following describes the behavior of a primary alcohol in the Lucas test at room temperature?

Neopentyl alcohol ($2,2$-dimethylpropan-1-ol) is classified as a:

Comparing the $C-O$ bond length in alcohols and phenols, which of the following is true?

The functional group $-OH$ in alcohols is called the:

Which of the following reagents can distinguish between ethanol and methanol?

What is the product of the reaction between an alcohol and an acid chloride in the presence of a base?

Which of the following compounds will not give a blue color in the Victor Meyer's test?

What is the major product formed when 2-methylbutan-2-ol is treated with $Cu$ at $573 K$?

The boiling point of ethanol ($78^{\circ}C$) is much higher than that of dimethyl ether ($-24^{\circ}C$), even though they have the same molecular formula. This is due to:

Which of the following reagents will convert an alcohol directly into an alkyl bromide with the least amount of rearrangement?

In the context of alcohol dehydration, Saytzeff's rule predicts the formation of the:

When comparing primary, secondary, and tertiary alcohols, the temperature required for dehydration to alkenes generally:

Which statement correctly describes the formation of an oxonium ion?

What is the function of heating in the dehydration reaction?

What is the name given to the ion $R-OH_{2}^{+}$ formed in the first step of the mechanism?

Which of the following compounds will NOT undergo dehydration to form an alkene under standard acidic conditions?

The dehydration of 2,3-dimethyl-2-butanol involves which of the following?

During the dehydration of $3,3-dimethyl-2-butanol$, the formation of $2,3-dimethyl-2-butene$ involves which sequence of events after protonation?

What is the primary reason that tertiary alcohols do not follow the $E2$ mechanism during acid-catalyzed dehydration?

In the dehydration of $1-methylcyclohexanol$, the minor product $methylenecyclopentane$ is not usually observed. However, $methylenecyclohexane$ is observed as a minor product. Why is $1-methylcyclohexene$ still the dominant product?

Which of the following accurately describes phenol?

Which of the following substituted phenols is the least acidic?

Which of the following is true for the phenoxide ion's resonance hybrid?

Which of the following describes p-methoxyphenol relative to phenol?

The presence of a $-\text{CH}_{3}$ group at the ortho position makes phenol less acidic than phenol itself. This is primarily due to:

What is the order of acidity of the following: (I) Phenol, (II) $m\text{-Methoxyphenol}$, (III) $p\text{-Methoxyphenol}$?

Which statement is incorrect regarding the acidity of phenol?

Which of the following phenol derivatives is the strongest acid?

Phenol is more acidic than methanol. Which of the following is the most comprehensive explanation?

Which of the following would be the correct order of decreasing $pK_{a}$ for the given phenols? (I) Phenol, (II) 4-nitrophenol, (III) 4-chlorophenol, (IV) 4-methoxyphenol.

The yield of salicylic acid in Kolbe's reaction is maximized by using:

Phenol reacts with benzene diazonium chloride. What are the reaction conditions for this coupling?

Which of the following describes the nature of the $-OH$ group in electrophilic aromatic substitution?

In the bromination of phenol, if the solvent used is carbon tetrachloride ($CCl_4$) instead of water, the product is primarily:

The coupling reaction between phenol and benzene diazonium chloride is an example of:

Which reagent sequence is best to prepare picric acid from phenol to avoid heavy oxidation losses?

When phenol is reacted with excess bromine water, the product is 2,4,6-tribromophenol. If we want to obtain only p-bromophenol as the major product, we should use:

The reaction of phenol with $Br_{2}$ in the presence of $FeBr_{3}$ results in $2,4,6$-tribromophenol. What is the role of $FeBr_{3}$ in this specific case compared to the reaction without it?

Nitrosation of phenol followed by oxidation with dilute $HNO_{3}$ is a synthetic route to $p$-nitrophenol. What is the benefit of this two-step process?

When phenol is treated with concentrated $H_{2}SO_{4}$ at $25^{\circ}\text{C}$ and then concentrated $HNO_{3}$ is added, the major product is picric acid. Why is this method preferred over direct nitration?

Ethers are generally resistant to the action of:

When diethyl ether is heated with dilute $H_{2}SO_{4}$ under pressure, the product is:

Friedel-Crafts acylation of anisole using $CH_{3}COCl$ and anhydrous $AlCl_{3}$ yields which major product?

What is the IUPAC name for $CH_{3}-O-CH(CH_{3})_{2}$?

In the following reaction sequence, propene is treated with mercuric acetate in the presence of methanol ($CH_{3}OH$), followed by reduction with sodium borohydride ($NaBH_{4}$) in a basic medium. Identify the major organic product 'Z' indicated in the diagram.

Ethers are soluble in concentrated $HCl$ due to the formation of:

Which of the following will not form an ether by reacting with sodium ethoxide?

The acid-catalyzed ring-opening of an unsymmetrical cyclic ether like $2$-ethyl-$2$-methyloxirane with an excess of methanol proceeds via a mechanism where the nucleophile attacks the more substituted carbon atom. Identify the major product of this reaction.

When $1$-(allyloxy)-$2,6$-dimethylbenzene is heated to $473\ K$, it undergoes a rearrangement. Given that both ortho positions of the benzene ring are substituted with methyl groups, what is the major organic product formed?

A cyclic ether with the formula $C_4H_8O$ is treated with $HBr$. The product is $1,4$-dibromobutane. The ether is: