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)
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (b)
Q2: Which one of the following alcohols reacts instantaneously with Lucas reagent? (NEET 2024)
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (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) 
(b) 
(c) 
(d) HF
View AnswerAns: (a)
In o-nitrophenol intramolecular H-bonding is present.
Q4: Major products A and B formed in the following reaction sequence, are (NEET 2024)
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (a)
2023
Q1: Consider the following reaction and identify the product (P).
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (d)
Q2: Consider the following reaction (NEET 2023)
Identify products A and B :-
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (b)
Q3: Which amongst the following will be most readily dehydrated under acidic conditions? (NEET 2023)
(a) 
(b) 
(c) 
(d) 
View AnswerAns: (a)
Due to presence of conjugation in product.
2022
Q1: Match the reagents (List-I) with the product (List-II) obtained from phenol. (NEET 2022 Phase 2)
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)
View AnswerAns: (d)
Q2: Which one of the following reaction sequence is incorrect method to prepare phenol? (NEET 2022 Phase 2)
(a) 
(b) Aniline, NaNO2 + HCl, H2O, heating
(c) Cumene, O2, H3O+
(d) 
View AnswerAns: (d)
At STP condition substitution at sp2 carbon 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
View AnswerAns: (a)
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
View AnswerAns: (a)
Primary, secondary and tertiary alcohols can be differentiated by their reaction with (HCl + anhy ZnCl2) Lucas reagent
2020
Q1: Anisole on cleavage with HI gives : (NEET 2020)
(a)
(b)
(c)
(d)
View AnswerAns: (c)
2019
Q1: The structure of intermediate A in the following reaction, is (NEET 2019)
(a)
(b)
(c)
(d)
View AnswerAns: B
2018
Q1: In the reaction
the electrophile involved is (NEET 2018)
(a) dichloromethyl cation 
(b) formyl cation 
(c) dichloromethyl anion 
(d) dichlorocarbene 
View AnswerAns: (d)
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
View AnswerAns: (d)
Q3: Identify the major products P, Q and R in the following sequence of reaction: (NEET 2018)
(a)
(b)
(c)
(d)
View Answer
2017
Q1: The heating of phenylmethyl ethers with HI produces (NEET 2017)
(a) iodobenzene
(b) phenol
(c) benzene
(d) ethyl chlorides
View AnswerAns: (b)
In case of phenyl methyl ether, methyl phenyl oxonium ion
is 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.
Q2: Which one is the most acidic compound? (NEET 2017)
(a) 
(b) 
(c) 
(d) 
View AnswerElectron 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:
can be classified as: (NEET 2016)
(a) Williamson alcohol synthesis reaction
(b) Williamson ether synthesis reaction
(c) Alcohol formation reaction
(d) Dehydration reaction
View AnswerThe 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
View AnswerAns: (c)
This is Reimer–Tiemann reaction.
Q2: Which of the following reaction(s) can be used for the preparation of alkyl halides? (NEET / AIPMT 2015)
(a) (I) and (II) only
(b) (IV) only
(c) (III) and (IV) only
(d) (I), (III), and (IV) only
View AnswerAns: (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 
(AIPMT 2015 Cancelled Paper)
(a) Gatterman – Koch reaction
(b) Williamson Synthesis
(c) Williamson's continuous etherification process
(d) Etard reaction
View AnswerAns: (b)
The 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
View AnswerAns: (a)
Acid reacts with sodium hydrogen carbonate as follows :
Among all the given options ortho-nitrophenol is weaker acid than HCO3 hence, it does not react with NaHCO3.
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Dec 23, 2024 Last updated |
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