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NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12 PDF Download

2024

Q1: Identify the correct reagents that would bring about the following transformation.   (NEET 2024)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12     

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (b)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q2: Which one of the following alcohols reacts instantaneously with Lucas reagent? (NEET 2024)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)
Tertiary alcohols react instantaneously with Lucas reagent and gives immediate turbidity. In case of tertiary alcohols, they form halides easily with Lucas reagent (conc. HCl and ZnCl2)

Q3: Intramolecular hydrogen bonding is present in (NEET 2024)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) HF                        

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
In o-nitrophenol intramolecular H-bonding is present.
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q4: Major products A and B formed in the following reaction sequence, are (NEET 2024)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2023

Q1: Consider the following reaction and identify the product (P).

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q2: Consider the following reaction     (NEET 2023)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Identify products A and B :-

(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (b)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12


Q3: Which amongst the following will be most readily dehydrated under acidic conditions?    (NEET 2023)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
Due to presence of conjugation in product.

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2022

Q1: Match the reagents (List-I) with the product (List-II) obtained from phenol.       (NEET 2022 Phase 2)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
Choose the correct answer from the options given below :
(a) (a) - (iv), (b) - (ii), (c) - (i), (d) - (iii)
(b) (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
(c) (a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
(d) (a) - (iv), (b) - (iii), (c) - (ii), (d) - (I)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12


Q2: Which one of the following reaction sequence is incorrect method to prepare phenol?     (NEET 2022 Phase 2)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(b) Aniline, NaNO2 + HCl, H2O, heating
(c) Cumene, O2, H3O+
(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

At STP condition substitution at spcarbon atom is not feasible.

Q2: Given below are two statements:  
Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of the electron-withdrawing into the group. 
Statement II: o-nitrophenol, m-nitrophenol, and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. 
In light of the above statements, choose the most appropriate answer from the options given below:    (NEET 2022 Phase 1)
(a) Statement I is correct but Statement II is incorrect 
(b) Statement I is incorrect but Statement II is correct 
(c) Both Statement I and Statement II are correct 
(d) Both Statement I and Statement II are incorrect

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
Statement I is correct, Statement II incorrect.

Q4: Given below are two statements:  
Statement -I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + ZnCl2, known as Lucas Reagent.  
Statement -II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements, choose the most appropriate answer from the options given below:      (NEET 2022 Phase 2)
(a) Statement I is correct but Statement II is incorrect
(b) Statement I is incorrect but Statement II is correct
(c) Both statement I and Statement II are correct
(d) Both Statement I and Statement II are incorrect

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
Primary, secondary and tertiary alcohols can be differentiated by their reaction with (HCl + anhy ZnCl2) Lucas reagent
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2020

Q1: Anisole on cleavage with HI gives :     (NEET 2020)
(a)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (c)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2019

Q1: The structure of intermediate A in the following reaction, is    (NEET 2019)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(a)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: B

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2018

Q1:  In the reaction
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12 the electrophile involved is (NEET 2018)
(a) dichloromethyl cation NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b) formyl cation NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c) dichloromethyl anion NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d) dichlorocarbene NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q2: The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order (NEET 2018)
(a) C2H5OH, C2H6, C2H5Cl
(b) C2H5OH, C2H5Cl, C2H5ONa
(c) C2H5Cl,C2H6,C2H5OH
(d) C2H5OH,C2H5ONa,C2H5Cl

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q3: Identify the major products P, Q and R in the following sequence of reaction:    (NEET 2018)
(a)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(b)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(c)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(d)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer
Ans: (d)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

2017


Q1: The heating of phenylmethyl ethers with HI produces    (NEET 2017)
(a) iodobenzene
(b) phenol
(c) benzene
(d) ethyl chlorides

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (b)
In case of phenyl methyl ether, methyl phenyl oxonium ion

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12is formed by protonation of ether. The O—CH3 bond is weaker than O—C6H5 bond as O—C6H5 has partial double bond character. Therefore, the attack by I– ion breaks O—CH3 bond to form CH3I. 

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q2: Which one is the most acidic compound?  (NEET 2017)
(a) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(b) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(c) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

(d) NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer
Ans: (c)
Electron withdrawing group at o and p-position w.r.t. OH group of phenol, increase the acidic strength.
Picric acid (2, 4, 6-trinitrophenol) is extremely more acidic among the given compounds due to the presence of three strong electron withdrawing groups ( NO2 group) at ortho and para-positions. 

2016

Q1: The reaction:

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

can be classified as:    (NEET 2016)
(a) Williamson alcohol synthesis reaction
(b) Williamson ether synthesis reaction
(c) Alcohol formation reaction
(d) Dehydration reaction

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer
Ans: B
The treatment of sodium alkoxide with a suitable alkyl halide to form an ether is called as Williamson ether synthesis reaction.

2015

Q1: Reaction of phenol with chloroform in the presence of dilute sodium hydroxide finally introduces which one of the following functional groups?       (NEET / AIPMT 2015)
(a) −COOH
(b) −CHCl2
(c) −CHO
(d) −CH2Cl

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (c)
This is Reimer–Tiemann reaction.NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12

Q2: Which of the following reaction(s) can be used for the preparation of alkyl halides?       (NEET / AIPMT 2015)

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12
(a) (I) and (II) only
(b) (IV) only
(c) (III) and (IV) only
(d) (I), (III), and (IV) only

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (d)
Lucas reagent [HCl + ZnCl2] can be used for
1° / 2° / 3° alcohol but if ZnCl2 is absent then only 3° alcohol can be used because it is most reactive due to 3° carbocation. 

Q3: The reaction   
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12 (AIPMT 2015 Cancelled Paper)
(a) Gatterman – Koch reaction
(b) Williamson Synthesis
(c) Williamson's continuous etherification process
(d) Etard reaction

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (b)
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12The reaction is called Williamson synthesis

2014

Q1: Which of the following will not be soluble sodium hydrogen carbonate?    (NEET 2014)
(a) o−Nitrophenol
(b) Benzenesulphonic acid
(c) 2, 4, 6 − trinitrophenol
(d) Benzoic acid

NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12  View Answer

Ans: (a)
Acid reacts with sodium hydrogen carbonate as follows :
NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12Among all the given options ortho-nitrophenol is weaker acid than HCO3 hence, it does not react with NaHCO3. 


The document NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers | Chemistry Class 12 is a part of the NEET Course Chemistry Class 12.
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FAQs on NEET Previous Year Questions (2014-2024): Alcohols, Phenols & Ethers - Chemistry Class 12

1. What are the general properties of alcohols, phenols, and ethers ?
Ans.Alcohols are characterized by the presence of one or more hydroxyl (-OH) groups, which make them polar and capable of hydrogen bonding, leading to higher boiling points than hydrocarbons. Phenols have a hydroxyl group attached to a benzene ring, giving them unique acidic properties. Ethers, containing an alkoxy group (-O-), are generally less polar and have lower boiling points compared to alcohols due to the absence of hydrogen bonding.
2. How do the boiling points of alcohols compare to those of ethers and phenols ?
Ans.Alcohols typically have higher boiling points than ethers and phenols due to stronger hydrogen bonding between alcohol molecules. Phenols have relatively high boiling points as well, but not as high as alcohols because the hydrogen bonding in phenols is less extensive. Ethers, lacking hydrogen bonding, have the lowest boiling points among the three.
3. What is the mechanism of the dehydration of alcohols to form alkenes ?
Ans.The dehydration of alcohols to form alkenes generally follows an E1 or E2 mechanism. In the E1 mechanism, the alcohol first undergoes protonation to form a carbocation, and then a water molecule leaves, leading to the formation of a double bond. In the E2 mechanism, the elimination occurs in a single step where a base abstracts a proton while the -OH group leaves simultaneously.
4. What are the common methods for the synthesis of ethers ?
Ans.Common methods for synthesizing ethers include the Williamson ether synthesis, which involves the reaction of an alkoxide ion with a primary alkyl halide. Another method is the acid-catalyzed dehydration of alcohols, where two alcohol molecules react under acidic conditions to form an ether.
5. What are the uses of alcohols, phenols, and ethers in daily life ?
Ans.Alcohols are widely used as solvents, antiseptics, and in the production of fuels and beverages. Phenols are utilized in the manufacture of plastics, resins, and as disinfectants. Ethers serve as solvents in various chemical reactions and are also used in anesthetics, such as diethyl ether, due to their volatility and low reactivity.
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