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Alcohols Phenols and Ethers — NEET UG Chemistry PYQs

655 previous year questions from Alcohols Phenols and Ethers with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

655 questionsChemistrySolutions on every page
1

Identify the product formed when ethyl alcohol reacts with H ₂ SO ₄ at 443 K.

MHT CET Medical 2026 Solution View → 2

Identify the product obtained when phenol reacts with bromine in presence of CS ₂

MHT CET Medical 2026 Solution View → 3

Which is the Lucas reagent among following?

MHT CET Medical 2026 Solution View → 4

Identify the type of the following reaction?

MHT CET Medical 2026 Solution View → 5

Identify the compounds formed when anisole is heated with concentrated HI.

MHT CET Medical 2026 Solution View → 6

Identify the product of Kolbe's reaction from following.

MHT CET Medical 2026 Solution View → 7

Identify the product formed when the mixture of Phenol and Hydrogen is passed over nickel catalyst at 433 K.

MHT CET Medical 2026 Solution View → 8

Which of the following compounds is found in Indian gooseberry?

MHT CET Medical 2026 Solution View → 9

Butan-2-ol is heated with red phosphorous and bromine. Find the number of optical isomers of the product formed.

MHT CET Medical 2026 Solution View → 10

An organic compound A on reaction with thionyl chloride, gives compound B. Compound B, reacts with sodium in dry ether as solvent, gives 2,3-dimethyl butane. Identify compound A.

MHT CET Medical 2026 Solution View → 11

Which of following reagents convert propene to 1-propanol?

MHT CET Medical 2026 Solution View → 12

Identify the product when propan-2-ol heated with Cu at 573 K.

MHT CET Medical 2026 Solution View → 13

An organic compound 'A' on oxidation with pyridinium chlorochromate forms an aldehyde having the molecular formula C ₂ H ₄ O . What is compound 'A'?

MHT CET Medical 2026 Solution View → 14

What is the product formed on the reduction of carboxylic acids using lithium aluminum hydride?

MHT CET Medical 2026 Solution View → 15

Which of the following compounds, when treated with acetic anhydride, forms aspirin?

MHT CET Medical 2026 Solution View → 16

Identify the substrate 'S' in the following reaction.

MHT CET Medical 2026 Solution View → 17

What is the common name of benzene-1,2,3-triol?:

MHT CET Medical 2026 Solution View → 18

Vapours of alcohol are passed over hot copper to give ketone. Ketone reacts with ethylene glycol to give a cyclic ketal. Cyclic ketal by treating with aq. HCl forms acetone. Identi

MHT CET Medical 2026 Solution View → 19

Which of the following reagents is used to distinguish ethers from hydrocarbons?

MHT CET Medical 2026 Solution View → 20

Identify Lucas reagent from following.

MHT CET Medical 2026 Solution View → 21

Which of the following reagent is used to convert alkene to alcohol through hydration ?

MHT CET Medical 2026 Solution View → 22

Identify the reagent used in Reimer-Tiemann reaction,

MHT CET Medical 2026 Solution View → 23

Identify A, B and C in following reaction when phenol is treated with chloroform in presence of NaOH?

MHT CET Medical 2026 Solution View → 24

Identify the amount of Dihydrogen formed when 46 g Na (molar mass = 23 g mol ⁻¹ ) reacts with excess ethanol.

MHT CET Medical 2026 Solution View → 25

Name the following reaction.

MHT CET Medical 2026 Solution View → 26

Identify the name of CH ₃ CH ₂ OH according to carbinol system .

MHT CET Medical 2026 Solution View → 27

Which of the following reactions is used to prepare salicylaldehyde from phenol ?

MHT CET Medical 2026 Solution View → 28

In the given reaction, the product "Z" is - CH ₃ -CH(OH)-CH ₃ Cu / 573 K . oxidation Z

MHT CET Medical 2026 Solution View → 29

Which of the following reagents is used for converting alcohol to alkyl chloride?

MHT CET Medical 2026 Solution View → 30

Phenols react with neutral ferric chloride, then which coloration is NOT produced?

MHT CET Medical 2026 Solution View → 31

What is the trivial name of Ethane 1,2-di-ol?

MHT CET Medical 2026 Solution View → 32

The main product obtained from phenol with PCl ₅ is

JIPMER 2019 Solution View → 33

array r CH ₃- CH ₂- CH = CH ₂ X CH ₃ CH ₂- CH ₂- CH ₂ OH array What is suitable reagent ( X ) ?

JIPMER 2019 Solution View → 34

What is the product ' P ' is the above reaction?

JIPMER 2018 Solution View → 35

Which of the following is the correct sequence of step involved in the mechanism of Cannizzaro reaction?

JIPMER 2018 Solution View → 36

Identify the major product that is obtained on treatment of CH ₃ CH ₂ CH ( F ) CH ₃ with CH ₃ O ⁻ / CH ₃ OH is

JIPMER 2018 Solution View → 37

When phenol is treated with CHCl ₃ and NaOH followed by acidification, salicylaldehyde is obtained. Which of the following species is involved in the above mentioned reaction as in

JIPMER 2018 Solution View → 38

Iso-propyl chloride +A 2-ethoxy propane +NaCl . The compound (A) is

JIPMER 2017 Solution View → 39

Aqueous 10 % NaHCO ₃ solution is used as a reagent for identifying ' A '. Which of the following compounds yield ' A ' on hydrolysis?

JIPMER 2017 Solution View → 40

Phenol [ (ii) CO ₂ / 140^ C ] (i) NaOH A H ⁺ / H ₂ O B Ac ₂ O C In the above reaction, end product ‘C’ is

JIPMER 2017 Solution View → 41

The product (P) is

JIPMER 2017 Solution View → 42

Ethers like ROR can be cleaved by concentrated HI but not by HCl because

JIPMER 2016 Solution View → 43

The product P of the given reaction is

JIPMER 2015 Solution View → 44

Which of the following compounds is soluble in benzene but almost insoluble in water?

JIPMER 2014 Solution View → 45

On warming with silver powder, chloroform is converted into

JIPMER 2012 Solution View → 46

The compound which forms acetaldehyde when heated with dilute NaOH , is

JIPMER 2011 Solution View → 47

Primary alcohols can be obtained from the reaction of R Mg X with

JIPMER 2010 Solution View → 48

Ethyl alcohol reacts with thionyl chloride to give

JIPMER 2010 Solution View → 49

Which of the following can give a Grignard reagent when reacted with magnesium in dry ether ?

JIPMER 2009 Solution View → 50

Which is used in alcoholic beverages ?

JIPMER 2009 Solution View → 51

A fruity smell is produced by the reaction of ( C ₂ H ₅ OH ) with

JIPMER 2008 Solution View → 52

Hydrolysis of phenyl isocyanide forms

JIPMER 2008 Solution View → 53

Reaction of ethyl formate with excess of ( CH ₃ MgI ) followed by hydrolysis gives

JIPMER 2008 Solution View → 54

Methanol and ethanol are miscible in water due to

JIPMER 2008 Solution View → 55

The product of following reaction is (2 CH ₃ MgBr + CH ₂ O )

JIPMER 2008 Solution View → 56

Which one of the following compounds is most acidic?

JIPMER 2007 Solution View → 57

In Williamson's synthesis, ethoxyethane is prepared by :

JIPMER 2006 Solution View → 58

HCHO reacts with CH ₃ MgI to give :

JIPMER 2006 Solution View → 59

Phenol reacts with chloroform in presence of

JIPMER 2005 Solution View → 60

Which of the following compound gives iodoform test?

JIPMER 2005 Solution View → 61

NaOH / H ⁺ reacts with

JIPMER 2005 Solution View → 62

The compound which reacts faster with Lucas reagent is

JIPMER 2004 Solution View → 63

Which rule dictates the regioselectivity of the addition reaction of unsymmetrical alkenes in acid-catalysed hydration?

NEET Solution View → 64

What electrophile reacts with the phenoxide ion to form ortho hydroxybenzoic acid?

NEET Solution View → 65

Which of the following alcohols is most likely to undergo dehydrogenation to form an alkene?

NEET Solution View → 66

What is the product of the reaction between acetone and a Grignard reagent?

NEET Solution View → 67

What is the final step in the synthesis of phenol from benzene sulphonic acid?

NEET Solution View → 68

Which type of alcohol is most reactive as a nucleophile in nucleophilic substitution reactions?

NEET Solution View → 69

Which type of alkyl group is suitable for the preparation of ethers via bimolecular dehydration?

NEET Solution View → 70

What is the order of reactivity of hydrogen halides in the cleavage of ethers?

NEET Solution View → 71

Which positions in the benzene ring are favoured for electrophilic substitution due to the presence of the -OH group?

NEET Solution View → 72

How does the presence of an aromatic ring affect the properties of phenols?

NEET Solution View → 73

What is the primary purpose of a protic acid in alcohol dehydration reactions?

NEET Solution View → 74

In the order of ease of dehydration, which type of alcohol is the easiest to dehydrate?

NEET Solution View → 75

What is the first step in the reaction of Grignard reagents with aldehydes and ketones?

NEET Solution View → 76

Why are ethers less soluble in water compared to alcohols of similar molecular masses?

NEET Solution View → 77

What is the general trend in the acid strength of alcohols when electron-releasing groups are attached to the alkyl chain?

NEET Solution View → 78

In the Reimer-Tiemann reaction, what happens to the benzal chloride intermediate to produce salicylaldehyde?

NEET Solution View → 79

In the presence of air, what do phenols slowly oxidise to, leading to dark-coloured mixtures?

NEET Solution View → 80

Which functional group is formed when an alcohol reacts with an alkyl halide in a nucleophilic substitution reaction?

NEET Solution View → 81

What does the formation of turbidity in the Lucas test indicate?

NEET Solution View → 82

Which type of alcohol is the most challenging to dehydrate among primary, secondary, and tertiary alcohols?

NEET Solution View → 83

What is the purpose of sodium hydroxide (NaOH) in the Reimer-Tiemann reaction?

NEET Solution View → 84

What is the primary purpose of the oleum in the synthesis of phenol from benzene?

NEET Solution View → 85

What type of reaction is the conversion of phenol to phenol-2,4-disulphonic acid with concentrated sulfuric acid?

NEET Solution View → 86

What type of alcohol is produced when methanal (formaldehyde) reacts with a Grignard reagent?

NEET Solution View → 87

As the size of alkyl/aryl groups in alcohols increases, their solubility in water generally:

NEET Solution View → 88

Why do the boiling points of alcohol decrease with an increase in branching in the carbon chain?

NEET Solution View → 89

Which acid is typically used for treating cumene hydroperoxide to produce phenol and acetone?

NEET Solution View → 90

What is the role of concentrated hydrogen halides in the cleavage of ethers?

NEET Solution View → 91

Which type of alcohol reacts most readily with a given haloacid?

NEET Solution View → 92

What product is obtained when phenol reacts with concentrated nitric acid?

NEET Solution View → 93

At what temperature is ethoxyethane the main product of ethanol dehydration in the presence of sulfuric acid?

NEET Solution View → 94

In the acid-catalysed hydration of alkenes, what is the role of the acid catalyst?

NEET Solution View → 95

What is the electron-rich nature of ortho and para positions in phenols attributed to?

NEET Solution View → 96

How can ortho and para nitrophenols be separated?

NEET Solution View → 97

Under what conditions does bimolecular dehydration favour the formation of alkenes over ethers?

NEET Solution View → 98

In the mechanism of acid-catalysed hydration, what is formed when protonation of alkene occurs?

NEET Solution View → 99

When a ketone reacts with a Grignard reagent, what type of bond forms between the carbon atoms of the two reactants?

NEET Solution View → 100

What is the purpose of deprotonation in the acid-catalysed hydration mechanism?

NEET Solution View → 101

In the reaction between water and an alkoxide, what role does water play?

NEET Solution View → 102

Which of the following is a potential side reaction in the Williamson ether synthesis when using secondary or tertiary alkyl halides?

NEET Solution View → 103

Why is p-nitrophenol less volatile than o-nitrophenol?

NEET Solution View → 104

What is the main feature of oxidation reactions of alcohols?

NEET Solution View → 105

Which type of carbon-carbon bond is formed in the hydroboration step of the reaction?

NEET Solution View → 106

Why is lithium aluminium hydride considered an expensive reagent?

NEET Solution View → 107

Which factor primarily determines the nucleophilic reactivity of alcohols?

NEET Solution View → 108

What type of reaction do alcohols typically undergo when they act as nucleophiles?

NEET Solution View → 109

Why is bromination of anisole an important reaction in organic chemistry?

NEET Solution View → 110

How are alkyl aryl ethers cleaved, and what products are formed?

NEET Solution View → 111

Which factor plays a crucial role in determining whether an alcohol undergoes substitution or elimination during dehydration?

NEET Solution View → 112

What is the main product when a tertiary alkyl halide reacts with CH 3 ONa in the Williamson ether synthesis?

NEET Solution View → 113

What type of bond is broken during the dehydration of alcohol?

NEET Solution View → 114

Why does the -OH group attached to the benzene ring activate it towards electrophilic substitution?

NEET Solution View → 115

How is sodium phenoxide formed from benzene sulphonic acid?

NEET Solution View → 116

What is the main product when a tertiary alkyl halide reacts with CH3ONa in the Williamson ether synthesis?

NEET Solution View → 117

Why are alkoxides capable of promoting elimination reactions in addition to substitution reactions in the Williamson ether synthesis?

NEET Solution View → 118

Which of the following statements is true about the reaction of phenol with zinc dust?

NEET Solution View → 119

What is the intermediate product formed after the reaction of phenol with chloroform in the Reimer-Tiemann reaction?

NEET Solution View → 120

Which of the following alcohols is likely to be miscible with water in all proportions?

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