Alcohols and Phenols

Phenol and ethanol can be distinguished by all except

The reaction of carbolic acid with caustic soda is used to produce colorless product. The molecular formula of the product is

Phenol can be distinguished from alcohol by:

Phenol on treatment with dil. HNO₃ at low temperature gives

Which one can be used as test for phenol

Excess alcohol at low temperature in presence of Conc. H₂SO₄ produces

Alkanol + [O] K₂Cr₂O₇/H₂SO₄ → A and B. The correct products are:

There are four alcohols P, Q, R and S with 3, 2, 1 and zero α-hydrogens. Which will not respond to Na₂Cr₂O₇/H₂SO₄

Alcohols react with Na metal to produce:

K₂Cr₂O₇/H₂SO₄ generates:

Which inorganic reagent may be used to distinguish between phenol and methanol:

During hydration of alkenes to form alcohols, alkenes are first dissolved in:

Absolute alcohol is;

Correct order of boiling point for compounds: (I) CH₃-CH₂-CH₂-CH₂-OH

(II) CH₃-CH₂-CH₂-OH

(III)CH₃-CH₂-OH

Ether is obtained by reaction of ethyl alcohol and H₂SO₄ at:

Ethanol-water is a/an _mixture.

Hydrogen passed through phenol at 150 in the presence of _ catalyst gives cyclohexanol.

Which bond will break when electrophile attacks an alcohol?

The products of the fermentation of a sugar are ethanol and:

Phenol can be distinguished from alcohol by adding:

Phenol reacts with concentrated H₂SO₄ to give:

Dissociation constant of phenol is:

Ethanol reacts with Ammonia to produce ethyl amine, the catalyst is:

When a hydrogen atom is removed from benzene, the group left behind is called:

Which of the following is a secondary alcohol?

When CH₃-CH₂-OH is oxidized in the presence of K₂Cr₂O₇ and H₂SO₄, the product formed is:

Iodoform test will not be positive with:

Primary alcohols usually give us aldehydes when oxidized in the presence of Na₂Cr₃O₇, what will the product be, when the secondary alcohols are oxidized in the same conditions?

The following structure is of a:

H

|

R - C - OH

|

R

Ethanol can be converted in to ethanoic acid by:

The dehydration of ethyl alcohol with concentrated H₂SO₄ at 140°C gives:

Aqueous phenol decolorizes bromine water to form a white precipitate. What is the structure of the white precipitate formed?

In the following reaction, what product(s) may be formed?

C₂H₅OH + PCl₅ → ?

Which one of the following groups is indicated when HCl is formed by reaction ofethanol with phosphorus pentachloride:

The formula of 2, 4, 6-tribromo phenol is:

Which one of the following alcohol is indicated by formation of yellow crystals in theIodoform test?

A primary alcohol, C₃H₈O (A), and a secondary alcohol, C₃H₈O(B), can be distinguished by:

Ethylene glycols are used as:

To produce absolute alcohol (100%) from rectified spirit (95.6% alcohol), the remaining 4.4% water must be removed by a drying agent such as

How will you distinguish between methanol and ethanol?

Which one of the following is NOT able to denature the ethanol?

Which one of the following was used as one of the earliest antiseptic and disinfectants?

Which one of the following is an appropriate name for the compound given below?

Which one of the following is the proper classification of the following is the proper classification of formula given below?

The phenoxide ion is more stable than ethoxide ion as:

Ethanol reacts with HCN to form cyanohydrin. This is an example of:

Choose the correct type for this reaction from the following:

C₂H₅-SO₃H + H₂O C₂H₅-OH + H₂SO₄

CH₃—CH₂—OH + PCl₅ CH₃—CH₂—Cl + POCl₃ + HClFormation of HCl is the test for the presence of _ in a compound.

Alcohol reacts slowly with Na metal compared to water because it has low concentration of H⁺ ion which suggests that it is:

Dehydration of methyl alcohol with concentrated sulphuric acid gives:

What do you call the process when sodium periodate is reacted to 1,2-diols?

2-propanoate on oxidation gives:

Sodium phenoxide on treating with hydrochloric acids yields:

The acidity of Phenol is due to its _:

At 25˚C with phenol 2-4-Dinitrophenol is formed by the reaction of:

Benzene is formed when Na reacts with which of the following?

30 grams of 2-propanol were mixed with excess acidified K₂Cr₂O₇ and boiled under reflux for 20 minutes. The organic product was then collected by distillation. The yield of product was 75.0%. What is the mass of product produced?

Dehydration of alcohol gives which of the following product in the presence of H₂SO₄ at 140?

If phenol is treated with 3 moles of conc. HNO₃ in the presence of H₂SO₄ .

What will be the product?

Methanol is produced by reduction of:

Which of the following best explains why phenol reacts with aqueous NaOH, but alcohols do not?

Which of the following is most soluble in water?

Which of the following does not give iodoform test?

Indicate the enzyme which catalyses the following reaction (NH₂​)₂​CO+H₂O⟶2NH₃​+CO₂​

Enzyme used for conversion of starch to glucose and glucose to ethanol are

The ease of dehydration of alcohols to produce alkenes is in the order of:

Which of the following compound is not an alcohol:

The procedure for the preparation of ethers in which an alcohol is first allowed to react with metallic sodium is called:

The concentration of rectified spirit is:

Oxidation of secondary alcohol gives

The reaction of alcohol with sodium produces:

The anion derived by deprotonation of an alcohol acts

Which product is formed by the reaction of phenol with concentrated nitric acid?

Which type of substituent will increase the acidic strength of phenols?

The melting and boiling point of alcohols are high as compared to corresponding alkanes due to

Which of the following is correct regarding phenol?

Which of the following alcohol can give a lodoform reaction?

Hydroquinone is a phenol; it contains two OH groups at:

When chlorobenzene reacts with sodium hydroxide at 350°C and 150 atmospheric pressure, it gives rise to the formation of:

It is used to distinguish between primary, secondary, and tertiary alcohol:

The IUPAC name of isopropyl alcohol is:

The decomposition of H₂O₂ is inhibited by:

Which of the following is Lucas reagent?

Phenol is more reactive than benzene towards electrophilic substitution. This characteristic is due to which of the following?

Carboxylic acid react with alcohol to form

Select the correct order of the relative strength of phenol, alcohol, water, and carboxylic acid

Both alcohol and phenol contain

Phenols are very reactive towards

What type of reaction occurs when phenol reacts with HNO₃?

Which compound has the lowest acidity?

Which of the most suitable reagent for the conversion of R-CH₂OH RCHO?

Benzyl alcohol C₆H₅CH₂OH is a:

Secondary alcohols have:

Phenol when subjected to nitration product is:

Oxidation of a primary alcohol with PCC (Pyridiniumchlorochromate) gives a/an:

What is the common name of 1,2,3-propanetriol?

What is the reactivity state of Phenols?

Methanol is prepared from carbon monoxide and hydrogen. The catalyst used for this reaction is:

Lucas test is based on?

Oxidation of Secondary alcohol gives which of the following products?

The correct sequence according to acidity of alcohols is.

X is a compound that do not react with Na metal but produces carboxylic acid when heated under reflux with acidified potassium dichromate?

Which one of the following does NOT give an iodoform test?

When phenol reacts with excess of bromine in aqueous solution it results in the formation of:

Ethyl alcohol in the presence of H₂SO₄ at 170°C produces

What are vinyl alcohol and acetaldehyde?

Complete oxidation of alcohol gives which of the following?

Dehydration of alcohol gives which of the following products in the presence of H₂SO₄ at 1400?

If phenol is treated with 3 moles of conc. HNO₃ in the presence of H₂SO₄, what will be the product?

The relative acidic strength of phenol, water, alcohol &carboxylic acid is:

When O-H bond breaks in alcohol, the order of reactivity is

Oxidation of secondary propyl alcohol gives:

Which of the following will give an iodoform reaction on treatment with Na₂CO₃ and I₂?

Which of the following Is formed when excess of ethyl alcohol is treated with concentrated H₂SO₄ at low temperature?

Which of the following reactions can be used for the conversion of ethyl alcohol into acetaldehyde?

Alcohols are prepared by the:

Alcohols are hydroxy derivatives of:

Which of the following is the weakest acid:

Which is most acidic?

Oxidation of a secondary alcohol with K₂Cr₂O₇/H₂SO₄ givesa/an:

Tertiary alcohols produce_with acidified KMnO₄

What is correct order for acidity of water, phenol and ethanol

Phenol reacts with aqueous bromine and decolorizes aqueous bromine forming the white precipitates of:

In esterification reaction, which one of the following bonds of alcohol undergo cleavage:

During the preparation of an ester, the "bridge" oxygen isfrom the:

Esterification takes place when an alcohol reacts with a(n):

When alcohols react with Na metal, the alkoxide ion thus formed is a strong:

Primary alcohols upon oxidation with acified dichromate gives:

Dehydration of alcohols with conc. H₂SO₄ at 180•C gives:

Alcohol in which hydroxyl is attached to carbon which is further attached to two alkyl groups is:

The carbon to which functional group in alcohols is attached is:

Absolute alcohol is:

Formaldehyde reacts with which one of the following to give primary alcohols?

Which of the following reactions is given by both alcohol and phenol?

The non-carbonyl compound out of the following is:

The most reactive compound out of the following is:

What is formed upon dehydration of diols?

The catalyst used for the dehydration of alcohols is

The formation of picric acid by phenols is called _.

Which of the following is used as disinfectant?

In which of the following reactions does the C-O bond of alcohol not break?

In Cannizzaro's reaction, Benzyl alcohol is obtained from?

Ethanol is prepared on a large scale by?

Which of the following is an example of "tertiary alcohols"?

Which of following has "higher boiling"and "melting point"?

What is the color of iodoform precipitates?

Phenol is stronger acid than?

Which of the following catalysts is used in the industrial preparation of methanol?

The solubility of alcohols is due to?

Which of the following compounds are added to ethanol to make it unfit for drinking?

Which of the following is applicable for phenols?

Methanol is also called as?

Which of the following alcohols does not convert into carboxylic acid when it reacts with K₂Cr₂O₇/H₂SO₄?

Which of the following compound shows more hydrogen bonding?

Phenol is also called _.

Which of the following is a strong acid?

The strength of an acid depends on?

The strongest acid among the following is?

Ethanol reacts with which of the following reagent to form ethyl chloride?

1-Propanol reacts with HCl in the presence of ZnCl₂ _?

This is used as a substrate during the formation of alcohol:

Which of the following is an insecticide?

Which of the following forms primary alcohol?

Which one of the following shows that iodoform test for a compound is positive?

When an electrophilic reagent attacks on alcohol, _.

NaBH₄ causes reduction of aldehyde and ketones into _?

Dehydration of alcohols at low temperature and high acid concentration results in?

What is the other name of 2,4,6-trinitrophenol?

Which of the following esters give a Jasmine Flavour?

Glycerol can also be termed as?

Which one of the following compounds is known as tertiary alcohol?

Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

Select one which is alcohol.

Alcohol in which carbon atom bonded to OH group is further attached with three alkyl group is:

The alcohols which are resistant to oxidation reactions are:

Why is phenol more acidic than Alcohol?

The biochemical process used in the synthesis of alcohol in the presence of yeast is called _.

In the Lucas test, tertiary alcohols form an oily layer of alkyl halide _.

Which of following is an example of electrophilic attack on alcohols?

Which of the following is not a derivative of benzene?

Phenol reacts with calcium carbonate and evolve _?

How are carboxylic acids formed from alcohol?

Which of the following reactions is used for the production of alcohols on industrial scale?

Treatment of ethene with cold sulphuric acid, followed by reaction with boiling water, yields:

In the following reaction sequence, product D will be:

The alkenes can be formed by alcohols in the presence of

The classification of monohydric alcohols is due to

Which of the following alcohol does not get oxidized when it reacts with K₂Cr₂O₇/H₂SO₄?

Phenol is a(n) _ solid?

Which of the following is more soluble in water?

Rectified spirits have a percentage of alcohol.

The compound 'leaf alcohol' is partly responsible for the smell of new - mown grass CH₃CH₂CH=CHCH₂CH₂OHLeaf alcoholWhich two compounds will be formed when 'leaf alcohol' is oxidized using hot, concentrated manganate (VII) ions?

The product formed by acid catalysed hydration of 2 - phenyl propene is:

By fermentation process of starch and by the catalytic enzyme, _ is produced.

Which of the following is not a physical property of ethers?

Phenol reacts with CH₃COCl to give:

Dehydration of ethanol at 140 oC in the presence of concentrated H₂SO₄ gives:

The diagram below represents the process of:

Ethanol, when reacted with PCI₅ , gave A, POCl₃, and HCI. A reacts with AgNO₂ to form B and AgCl. A and B are respectively:

Which of the following is TRUE regarding Methyl Alcohol?

The test used to distinguish among primary, secondary, and tertiary alcohols is:

Which of the following compounds is solid at room temperature?

Which of the following compounds will give a secondary alcohol after reaction with NaBH₄?

Dehydration of alcohols with conc. H₂SO₄ at 180°C gives:

Which of the following is incorrect