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Home/JEE MAINS/chemistry/alcohols phenols and ethers
Curated PYQ Collection

Top 50 Most Repeated ALCOHOLS PHENOLS AND ETHERS PYQs | JEE MAINS

A curated collection of the most important questions from ALCOHOLS PHENOLS AND ETHERS, fully solved with step-by-step concepts to prepare for JEE MAINS.

Question #1

Practice Question

A.Propan-1-ol
B.Propan-2-ol
C.Propane
D.Butan-2-ol

Concept Applied

Hydration gives 2-propanol (Markovnikov); reduction of ketone (if formed) not applicable here — already alcohol....

Read Full Step-by-Step Solution →

Question #2

Practice Question

A.H₂SO₄ (conc.)
B.NaOH (aq.)
C.PCl₅
D.KMnO₄ (cold, dilute)

Concept Applied

Concentrated sulfuric acid protonates ethene, forming a carbocation that reacts with water to give ethanol after deprotonation; this is the classic ac...

Read Full Step-by-Step Solution →

Question #3

Practice Question

A.Ethanol < Water < Phenol < p-Nitrophenol
B.Phenol < Ethanol < Water < p-Nitrophenol
C.Water < Ethanol < Phenol < p-Nitrophenol
D.p-Nitrophenol < Phenol < Water < Ethanol

Concept Applied

Electron-withdrawing NO₂ increases acidity; phenol > water > ethanol due to resonance....

Read Full Step-by-Step Solution →

Question #4

Practice Question

A.Butanal
B.Butanoic acid
C.Butanone
D.1-Butanol

Concept Applied

PCC oxidizes primary alcohols to aldehydes without further oxidation....

Read Full Step-by-Step Solution →

Question #5

Practice Question

A.Two molecules of methanol
B.Two molecules of formaldehyde
C.One molecule of CO₂
D.Ethanal

Concept Applied

Periodic acid cleaves vicinal diols to carbonyl compounds....

Read Full Step-by-Step Solution →

Question #6

Practice Question

A.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COONa}$
B.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COOH + NaOH}$
C.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COOH + Na^+}$
D.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COONa + H_2}$

Concept Applied

The phenoxide ion attacks CO₂ to form the carboxylate intermediate, which on protonation (by water) yields salicylic acid and NaOH as a by‑product....

Read Full Step-by-Step Solution →

Question #7

Practice Question

A.Ethanol
B.Phenol
C.tert-Butanol
D.n-Butanol

Concept Applied

Tertiary alcohols react fastest with Lucas reagent (ZnCl₂/HCl) giving immediate turbidity....

Read Full Step-by-Step Solution →

Question #8

Practice Question

A.Salicylic acid
B.Phenyl acetate
C.Hydroquinone
D.Benzoic acid

Concept Applied

Phenol reacts with sodium carbonate and carbon dioxide at about 125 °C. The CO₂ adds ortho to the phenoxide ion, and after acid work‑up the product is...

Read Full Step-by-Step Solution →

Question #9

Practice Question

A.$C_2H_5OC_2H_5$
B.$C_2H_5OC_2H_4$
C.$C_2H_5OC_2H_3$
D.$C_2H_5OC_2H_2$

Concept Applied

Step 1: Recall the Williamson synthesis reaction, which involves the reaction of an alkyl halide with a strong base to form an ether.,Step 2: Identify...

Read Full Step-by-Step Solution →

Question #10

Practice Question

A.The reaction proceeds via a carbocation intermediate formed by protonation of the double bond.
B.The reaction proceeds via a free‑radical mechanism initiated by peroxide.
C.The reaction involves a concerted [2+2] cycloaddition.
D.The reaction requires a metal hydride catalyst to donate H⁻.

Concept Applied

Acid‑catalyzed hydration of alkenes follows an electrophilic addition pathway: the π bond is protonated to give a carbocation, which is then attacked ...

Read Full Step-by-Step Solution →

Question #11

Practice Question

A.Propan-1-ol
B.Propan-2-ol
C.Propane
D.Butan-2-ol

Concept Applied

Hydration gives 2-propanol (Markovnikov); reduction of ketone (if formed) not applicable here — already alcohol....

Read Full Step-by-Step Solution →

Question #12

Practice Question

A.H₂SO₄ (conc.)
B.NaOH (aq.)
C.PCl₅
D.KMnO₄ (cold, dilute)

Concept Applied

Concentrated sulfuric acid protonates ethene, forming a carbocation that reacts with water to give ethanol after deprotonation; this is the classic ac...

Read Full Step-by-Step Solution →

Question #13

Practice Question

A.Ethanol < Water < Phenol < p-Nitrophenol
B.Phenol < Ethanol < Water < p-Nitrophenol
C.Water < Ethanol < Phenol < p-Nitrophenol
D.p-Nitrophenol < Phenol < Water < Ethanol

Concept Applied

Electron-withdrawing NO₂ increases acidity; phenol > water > ethanol due to resonance....

Read Full Step-by-Step Solution →

Question #14

Practice Question

A.Butanal
B.Butanoic acid
C.Butanone
D.1-Butanol

Concept Applied

PCC oxidizes primary alcohols to aldehydes without further oxidation....

Read Full Step-by-Step Solution →

Question #15

Practice Question

A.Two molecules of methanol
B.Two molecules of formaldehyde
C.One molecule of CO₂
D.Ethanal

Concept Applied

Periodic acid cleaves vicinal diols to carbonyl compounds....

Read Full Step-by-Step Solution →

Question #16

Practice Question

A.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COONa}$
B.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COOH + NaOH}$
C.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COOH + Na^+}$
D.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COONa + H_2}$

Concept Applied

The phenoxide ion attacks CO₂ to form the carboxylate intermediate, which on protonation (by water) yields salicylic acid and NaOH as a by‑product....

Read Full Step-by-Step Solution →

Question #17

Practice Question

A.Ethanol
B.Phenol
C.tert-Butanol
D.n-Butanol

Concept Applied

Tertiary alcohols react fastest with Lucas reagent (ZnCl₂/HCl) giving immediate turbidity....

Read Full Step-by-Step Solution →

Question #18

Practice Question

A.Salicylic acid
B.Phenyl acetate
C.Hydroquinone
D.Benzoic acid

Concept Applied

Phenol reacts with sodium carbonate and carbon dioxide at about 125 °C. The CO₂ adds ortho to the phenoxide ion, and after acid work‑up the product is...

Read Full Step-by-Step Solution →

Question #19

Practice Question

A.$C_2H_5OC_2H_5$
B.$C_2H_5OC_2H_4$
C.$C_2H_5OC_2H_3$
D.$C_2H_5OC_2H_2$

Concept Applied

Step 1: Recall the Williamson synthesis reaction, which involves the reaction of an alkyl halide with a strong base to form an ether.,Step 2: Identify...

Read Full Step-by-Step Solution →

Question #20

Practice Question

A.The reaction proceeds via a carbocation intermediate formed by protonation of the double bond.
B.The reaction proceeds via a free‑radical mechanism initiated by peroxide.
C.The reaction involves a concerted [2+2] cycloaddition.
D.The reaction requires a metal hydride catalyst to donate H⁻.

Concept Applied

Acid‑catalyzed hydration of alkenes follows an electrophilic addition pathway: the π bond is protonated to give a carbocation, which is then attacked ...

Read Full Step-by-Step Solution →

Question #21

Practice Question

A.Propan-1-ol
B.Propan-2-ol
C.Propane
D.Butan-2-ol

Concept Applied

Hydration gives 2-propanol (Markovnikov); reduction of ketone (if formed) not applicable here — already alcohol....

Read Full Step-by-Step Solution →

Question #22

Practice Question

A.H₂SO₄ (conc.)
B.NaOH (aq.)
C.PCl₅
D.KMnO₄ (cold, dilute)

Concept Applied

Concentrated sulfuric acid protonates ethene, forming a carbocation that reacts with water to give ethanol after deprotonation; this is the classic ac...

Read Full Step-by-Step Solution →

Question #23

Practice Question

A.Ethanol < Water < Phenol < p-Nitrophenol
B.Phenol < Ethanol < Water < p-Nitrophenol
C.Water < Ethanol < Phenol < p-Nitrophenol
D.p-Nitrophenol < Phenol < Water < Ethanol

Concept Applied

Electron-withdrawing NO₂ increases acidity; phenol > water > ethanol due to resonance....

Read Full Step-by-Step Solution →

Question #24

Practice Question

A.Butanal
B.Butanoic acid
C.Butanone
D.1-Butanol

Concept Applied

PCC oxidizes primary alcohols to aldehydes without further oxidation....

Read Full Step-by-Step Solution →

Question #25

Practice Question

A.Two molecules of methanol
B.Two molecules of formaldehyde
C.One molecule of CO₂
D.Ethanal

Concept Applied

Periodic acid cleaves vicinal diols to carbonyl compounds....

Read Full Step-by-Step Solution →

Question #26

Practice Question

A.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COONa}$
B.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COOH + NaOH}$
C.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COOH + Na^+}$
D.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COONa + H_2}$

Concept Applied

The phenoxide ion attacks CO₂ to form the carboxylate intermediate, which on protonation (by water) yields salicylic acid and NaOH as a by‑product....

Read Full Step-by-Step Solution →

Question #27

Practice Question

A.Ethanol
B.Phenol
C.tert-Butanol
D.n-Butanol

Concept Applied

Tertiary alcohols react fastest with Lucas reagent (ZnCl₂/HCl) giving immediate turbidity....

Read Full Step-by-Step Solution →

Question #28

Practice Question

A.Salicylic acid
B.Phenyl acetate
C.Hydroquinone
D.Benzoic acid

Concept Applied

Phenol reacts with sodium carbonate and carbon dioxide at about 125 °C. The CO₂ adds ortho to the phenoxide ion, and after acid work‑up the product is...

Read Full Step-by-Step Solution →

Question #29

Practice Question

A.$C_2H_5OC_2H_5$
B.$C_2H_5OC_2H_4$
C.$C_2H_5OC_2H_3$
D.$C_2H_5OC_2H_2$

Concept Applied

Step 1: Recall the Williamson synthesis reaction, which involves the reaction of an alkyl halide with a strong base to form an ether.,Step 2: Identify...

Read Full Step-by-Step Solution →

Question #30

Practice Question

A.The reaction proceeds via a carbocation intermediate formed by protonation of the double bond.
B.The reaction proceeds via a free‑radical mechanism initiated by peroxide.
C.The reaction involves a concerted [2+2] cycloaddition.
D.The reaction requires a metal hydride catalyst to donate H⁻.

Concept Applied

Acid‑catalyzed hydration of alkenes follows an electrophilic addition pathway: the π bond is protonated to give a carbocation, which is then attacked ...

Read Full Step-by-Step Solution →

Question #31

Practice Question

A.Propan-1-ol
B.Propan-2-ol
C.Propane
D.Butan-2-ol

Concept Applied

Hydration gives 2-propanol (Markovnikov); reduction of ketone (if formed) not applicable here — already alcohol....

Read Full Step-by-Step Solution →

Question #32

Practice Question

A.H₂SO₄ (conc.)
B.NaOH (aq.)
C.PCl₅
D.KMnO₄ (cold, dilute)

Concept Applied

Concentrated sulfuric acid protonates ethene, forming a carbocation that reacts with water to give ethanol after deprotonation; this is the classic ac...

Read Full Step-by-Step Solution →

Question #33

Practice Question

A.Ethanol < Water < Phenol < p-Nitrophenol
B.Phenol < Ethanol < Water < p-Nitrophenol
C.Water < Ethanol < Phenol < p-Nitrophenol
D.p-Nitrophenol < Phenol < Water < Ethanol

Concept Applied

Electron-withdrawing NO₂ increases acidity; phenol > water > ethanol due to resonance....

Read Full Step-by-Step Solution →

Question #34

Practice Question

A.Butanal
B.Butanoic acid
C.Butanone
D.1-Butanol

Concept Applied

PCC oxidizes primary alcohols to aldehydes without further oxidation....

Read Full Step-by-Step Solution →

Question #35

Practice Question

A.Two molecules of methanol
B.Two molecules of formaldehyde
C.One molecule of CO₂
D.Ethanal

Concept Applied

Periodic acid cleaves vicinal diols to carbonyl compounds....

Read Full Step-by-Step Solution →

Question #36

Practice Question

A.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COONa}$
B.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COOH + NaOH}$
C.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COOH + Na^+}$
D.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COONa + H_2}$

Concept Applied

The phenoxide ion attacks CO₂ to form the carboxylate intermediate, which on protonation (by water) yields salicylic acid and NaOH as a by‑product....

Read Full Step-by-Step Solution →

Question #37

Practice Question

A.Ethanol
B.Phenol
C.tert-Butanol
D.n-Butanol

Concept Applied

Tertiary alcohols react fastest with Lucas reagent (ZnCl₂/HCl) giving immediate turbidity....

Read Full Step-by-Step Solution →

Question #38

Practice Question

A.Salicylic acid
B.Phenyl acetate
C.Hydroquinone
D.Benzoic acid

Concept Applied

Phenol reacts with sodium carbonate and carbon dioxide at about 125 °C. The CO₂ adds ortho to the phenoxide ion, and after acid work‑up the product is...

Read Full Step-by-Step Solution →

Question #39

Practice Question

A.$C_2H_5OC_2H_5$
B.$C_2H_5OC_2H_4$
C.$C_2H_5OC_2H_3$
D.$C_2H_5OC_2H_2$

Concept Applied

Step 1: Recall the Williamson synthesis reaction, which involves the reaction of an alkyl halide with a strong base to form an ether.,Step 2: Identify...

Read Full Step-by-Step Solution →

Question #40

Practice Question

A.The reaction proceeds via a carbocation intermediate formed by protonation of the double bond.
B.The reaction proceeds via a free‑radical mechanism initiated by peroxide.
C.The reaction involves a concerted [2+2] cycloaddition.
D.The reaction requires a metal hydride catalyst to donate H⁻.

Concept Applied

Acid‑catalyzed hydration of alkenes follows an electrophilic addition pathway: the π bond is protonated to give a carbocation, which is then attacked ...

Read Full Step-by-Step Solution →

Question #41

Practice Question

A.Propan-1-ol
B.Propan-2-ol
C.Propane
D.Butan-2-ol

Concept Applied

Hydration gives 2-propanol (Markovnikov); reduction of ketone (if formed) not applicable here — already alcohol....

Read Full Step-by-Step Solution →

Question #42

Practice Question

A.H₂SO₄ (conc.)
B.NaOH (aq.)
C.PCl₅
D.KMnO₄ (cold, dilute)

Concept Applied

Concentrated sulfuric acid protonates ethene, forming a carbocation that reacts with water to give ethanol after deprotonation; this is the classic ac...

Read Full Step-by-Step Solution →

Question #43

Practice Question

A.Ethanol < Water < Phenol < p-Nitrophenol
B.Phenol < Ethanol < Water < p-Nitrophenol
C.Water < Ethanol < Phenol < p-Nitrophenol
D.p-Nitrophenol < Phenol < Water < Ethanol

Concept Applied

Electron-withdrawing NO₂ increases acidity; phenol > water > ethanol due to resonance....

Read Full Step-by-Step Solution →

Question #44

Practice Question

A.Butanal
B.Butanoic acid
C.Butanone
D.1-Butanol

Concept Applied

PCC oxidizes primary alcohols to aldehydes without further oxidation....

Read Full Step-by-Step Solution →

Question #45

Practice Question

A.Two molecules of methanol
B.Two molecules of formaldehyde
C.One molecule of CO₂
D.Ethanal

Concept Applied

Periodic acid cleaves vicinal diols to carbonyl compounds....

Read Full Step-by-Step Solution →

Question #46

Practice Question

A.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COONa}$
B.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COOH + NaOH}$
C.$\displaystyle \mathrm{C_6H_5ONa + CO_2 \rightarrow C_6H_4(OH)COOH + Na^+}$
D.$\displaystyle \mathrm{C_6H_5ONa + CO_2 + H_2O \rightarrow C_6H_4(OH)COONa + H_2}$

Concept Applied

The phenoxide ion attacks CO₂ to form the carboxylate intermediate, which on protonation (by water) yields salicylic acid and NaOH as a by‑product....

Read Full Step-by-Step Solution →

Question #47

Practice Question

A.Ethanol
B.Phenol
C.tert-Butanol
D.n-Butanol

Concept Applied

Tertiary alcohols react fastest with Lucas reagent (ZnCl₂/HCl) giving immediate turbidity....

Read Full Step-by-Step Solution →

Question #48

Practice Question

A.Salicylic acid
B.Phenyl acetate
C.Hydroquinone
D.Benzoic acid

Concept Applied

Phenol reacts with sodium carbonate and carbon dioxide at about 125 °C. The CO₂ adds ortho to the phenoxide ion, and after acid work‑up the product is...

Read Full Step-by-Step Solution →

Question #49

Practice Question

A.$C_2H_5OC_2H_5$
B.$C_2H_5OC_2H_4$
C.$C_2H_5OC_2H_3$
D.$C_2H_5OC_2H_2$

Concept Applied

Step 1: Recall the Williamson synthesis reaction, which involves the reaction of an alkyl halide with a strong base to form an ether.,Step 2: Identify...

Read Full Step-by-Step Solution →

Question #50

Practice Question

A.The reaction proceeds via a carbocation intermediate formed by protonation of the double bond.
B.The reaction proceeds via a free‑radical mechanism initiated by peroxide.
C.The reaction involves a concerted [2+2] cycloaddition.
D.The reaction requires a metal hydride catalyst to donate H⁻.

Concept Applied

Acid‑catalyzed hydration of alkenes follows an electrophilic addition pathway: the π bond is protonated to give a carbocation, which is then attacked ...

Read Full Step-by-Step Solution →
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