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NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 11 Alcohols, Phenols And Ethers

NCERT Solution For Class 12 Chemistry Chemistry Ii

Alcohols, Phenols And Ethers Here is the CBSE Chemistry Chapter 11 for Class 12 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 12 Chemistry Alcohols, Phenols And Ethers Chapter 11 NCERT Solutions for Class 12 Chemistry Alcohols, Phenols And Ethers Chapter 11 The following is a summary in Hindi and English for the academic year 2024-25. You can save these solutions to your computer or use the Class 12 Chemistry.

Question 1

NCERT Solutions for Class 12 Chemistry Chemistry Ii Chapter 11 Alcohols, Phenols And Ethers

NCERT Solution For Class 12 Chemistry Chemistry Ii

Classify the following as primary, secondary and tertiary alcohols:

Classify the following as primary, secondary and tertiary alcohols:

Classify the following as primary, secondary and tertiary alcohols:

Classify the following as primary, secondary and tertiary alcohols:

Classify the following as primary, secondary and tertiary alcohols:

Classify the following as primary, secondary and tertiary alcohols:

Identify allylic alcohols in the above examples.

Name the following compounds according to IUPAC system.

Name the following compounds according to IUPAC system.

Name the following compounds according to IUPAC system.

Name the following compounds according to IUPAC system.

Name the following compounds according to IUPAC system.

Show how are the following alcohols prepared by the reaction of a suitable Grignard reagent on methanal?

Show how are the following alcohols prepared by the reaction of a suitable Grignard reagent on methanal?

Write structures of the products of the following reactions:

Write structures of the products of the following reactions:

Write structures of the products of the following reactions:

Give structures of the products you would expect when each of the following alcohol reacts with,(a) HCl—ZnCl2 (b) HBr and (c) SOCl2.(i) Butan-1-ol (ii) 2-Methyl butan-2-ol.

Predict the major product of acid catalysed dehydration of (i) 1-methylcyclohexanol and (ii) butan-1-ol.

Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of corresponding phenoxide ions.

Write the equations involved in the following reactions:(i) Reimer-Tiemann reaction (ii) Kolbe’s reaction.

Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methyl pentan-2-ol.

Which of the following is an appropriate set of reactants for the preparation of 1-methoxy-4-nitro-benzene and why?

Predict the products of the following reactions:

Predict the products of the following reactions:

Predict the products of the following reactions:

Predict the products of the following reactions:

Write IUPAC name of the following compounds:

Write IUPAC name of the following compounds:

Write IUPAC name of:

Write IUPAC name of:CH3O—CH2—CH—OCH3

Name of the following compounds in IUPAC system:

Name of the following compounds in IUPAC system:

Give the structure of 2-nitro-4-acetyl phenol.

Give the structure of 2-methoxy phenol.

Give IUPAC name of the following compound:

Write the structure and IUPAC name of isobutyl alcohol.

What is the common name of the following alcohol?(CH3)2CHCH2OH.

What is the common name of the following alcohol?(CH3)3COH

What is the common name of the following alcohol?H2C = CHCH2OH

Write the structure for each of the following alcohols and label at 1°, 2° or 3°.(i) 3-Chloro butanol.(ii) 3, 3-dimethyl cyclopentanol.(iii) 3-chloro-2-methyl-1-butanol.

Write the structure of compound A in the following reactions:

Write the structure of compound A and B in the following reactions:

Why are alcohols soluble in water?

Why phenol is stronger acid than ethanol?

The boiling points of phenols are higher than the corresponding arenes and haloarenes. Give reason.

Phenols are sparingly soluble in water. Why?

What happens when 3-methyl butanone is reduced with sodium tetrahydrido borate(III)?

Give the product of the following reaction:

How will you convert propene into propan-1-ol?

Convert 2 -Chloropropane into propane - 1 - ol.

What happens when ethylene is absorbed in sulphuric acid at 353 K and 30 atmospheric pressure followed by dilution?

Write the structure and IUPAC name of the major product obtained when ethyl magnesium bromide reacts with formaldehyde and the product is then hydrolysed with dilute H2SO4.

Compare the relative boiling points of:

Give the equation of reaction of preparation of phenol from cumene.

Compare the relative boiling point of toluene and phenol.

You are given benzene, conc. and NaOH. Write the equations for the preparation of phenol using these reagents.

Convert aniline into phenol.

Write the structure and IUPAC name of the major product of the following reaction:

Which is more acidic and why? p-chlorophenol or p-nitrophenol?

Arrange the following compounds in increasing order of their acid strength.Propan-1-ol, 2, 4, 6-trinitrophenol, 3-nitro-phenol, 3, 5-dinitrophenol, phenol, 4-methyl phenol.

Why has tertiary alcohol higher reactivity towards hydrogen halide compared to secondary and primary alcohols?

State what happens when isopropyl chloride is boiled with alcoholic potassium hydroxide solution.

Give reason: nitration of phenol gives ortho and para products only.

Which electrophile is the attacking reagent when phenol and chloroform undergoes Reimer Tiemann reaction?

Write the equation for the industrial synthesis of methanol.

Write the structure of the major product and also label the product as 1°, 2° or 3° alcohol.

Name the enzymes which convert sucrose into glucose and fructose and finally into ethanol.

What is the expected product from the reaction ofwith(i) LiAlH4, (ii) H2/Pt?

Arrange the following compounds in order of increasing boiling points:Penta-1-ol, butan-1-ol, butan-2-ol, ethanol, propan-1-ol, methanol.

Arrange the following compounds in increasing order of boiling point and account for the order:(a) 1-pentanol, (b) 2-methyl-2-butanol, (c) 3-methyl-butanol-2.

Why is ethanol less acidic than water?

Compare the acidity of Cl—CH2 CH2OH and CH3CH2OH. Explain.

Arrange the following in order of decreasing basic strength:(CH3)3(CO–, CH3O–, (CH3)2CHO–

Compare and explain the relative Bronsted basicities of 1°, 2° and 3° alcohols in the liquid state.

Give one example of a reaction to show that alcohol acts as a Bronsted base.

What happens when ethanol reacts with Na metal? Name the products formed.

Arrange the following alcohols in order of increasing reactivity towards Na metal:

Classify the following as primary, secondary and tertiary alcohols:
$straight H subscript 2 straight C space equals space CH minus CH subscript 2 OH$

Classify the following as primary, secondary and tertiary alcohols:
$CH subscript 3 minus CH subscript 2 minus CH subscript 2 minus OH$

Write structures of the products of the following reactions:
$CH subscript 3 space minus space CH space equals space CH subscript 2 space space space space space rightwards arrow with straight H subscript 2 straight O divided by straight H to the power of plus on top$

Give structures of the products you would expect when each of the following alcohol reacts with,
(a) HCl—ZnCl₂ (b) HBr and (c) SOCl₂.

(i) Butan-1-ol (ii) 2-Methyl butan-2-ol.

Predict the major product of acid catalysed dehydration of
(i) 1-methylcyclohexanol and (ii) butan-1-ol.

Write the equations involved in the following reactions:
(i) Reimer-Tiemann reaction
(ii) Kolbe’s reaction.

Predict the products of the following reactions:

$CH subscript 3 minus CH subscript 2 minus CH subscript 2 minus OCH subscript 3 plus HBr space rightwards arrow from conc. to Cold space and of$

Predict the products of the following reactions:
$left parenthesis CH subscript 3 right parenthesis subscript 3 straight C space minus space OC subscript 2 straight H subscript 5 space space rightwards arrow with HI on top$

Write IUPAC name of:
CH₃O—CH₂—CH—OCH₃

What is the common name of the following alcohol?
(CH₃)₂CHCH₂OH.

What is the common name of the following alcohol?
(CH₃)₃COH

What is the common name of the following alcohol?
H₂C = CHCH₂OH

Write the structure for each of the following alcohols and label at 1°, 2° or 3°.
(i) 3-Chloro butanol.
(ii) 3, 3-dimethyl cyclopentanol.
(iii) 3-chloro-2-methyl-1-butanol.

Write the structure of compound A in the following reactions:
$left parenthesis CH subscript 3 right parenthesis subscript 2 CHCH subscript 2 CHO space rightwards arrow with LiAlH subscript 4 on top space straight A$

Write the structure and IUPAC name of the major product obtained when ethyl magnesium bromide reacts with formaldehyde and the product is then hydrolysed with dilute H₂SO₄.

You are given benzene, conc. $straight H subscript 2 SO subscript 4$ and NaOH. Write the equations for the preparation of phenol using these reagents.

Arrange the following compounds in increasing order of their acid strength.
Propan-1-ol, 2, 4, 6-trinitrophenol, 3-nitro-phenol, 3, 5-dinitrophenol, phenol, 4-methyl phenol.

What is the expected product from the reaction of

with
(i) LiAlH₄, (ii) H₂/Pt?

Arrange the following compounds in order of increasing boiling points:
Penta-1-ol, butan-1-ol, butan-2-ol, ethanol, propan-1-ol, methanol.

Arrange the following compounds in increasing order of boiling point and account for the order:
(a) 1-pentanol, (b) 2-methyl-2-butanol, (c) 3-methyl-butanol-2.

Compare the acidity of Cl—CH₂ CH₂OH and CH₃CH₂OH. Explain.

Arrange the following in order of decreasing basic strength:
(CH₃)₃(CO^–, CH₃O^–, (CH₃)₂CHO^–

Explain why sodium (Na) may be used to remove the last trates of H₂O from benzene but not from ethanol?

Give the major product of the reaction of ethanol with:
(i) Ethanoic anhydride (CH₃CO)₂O.
(ii) Ethanol chloride in the presence of pyridine.

Write the name and sturcture of the product formed when propene dissolves in cold conc. H₂SO₄.

Arrange the following in order of decreasing ease of dihydration:

(CH₃)₃COH, (CH₃)₂CHOH, CH₃CH₂OH

Arrange the following alcohols in decreasing order of rate of dehydration with H₂SO₄.

Give the structure and IUPAC name of the product from the reaction of phenol with CHCl₃ in NaOH followed by acidification.

What happens when dilute HNO₃ is added to phenol? Name the method to separate the isomers obtained.

Give the structure of the products resulting from the reaction of sodium phenoxide with CO₂ at 4 atm and 400 K followed by addition of aqueous acid.

Give the product(s) from the reaction of one mole diethyl ether with
(i) one mole of conc. HI and
(ii) excess of HI.

Why bromination of anisole takes place even in the absence of FeBr₃ as a catalyst?

Complete the following equation:

$CH subscript 3 minus straight O minus CH subscript 3 plus CH subscript 3 COCl space rightwards arrow from increment to ZnCl subscript 2 of$

Why is O—CH₃, ortho and para directing in aromatic electrophilic substitution?

Phenol is acidic but does not decompose NaHCO₃ solution while carbonic acids like CH₃COOH decompose NaHCO₃ solution. Why?