Question 1: Palette 1/170

JEE Mains 2026 MCQ

The reactions which produce alcohol as the product are :

A. $\mathrm{CH}_4 + \mathrm{O}_2 \xrightarrow{\mathrm{Mo}_2\mathrm{O}_3,\ \Delta} $

B. $2\mathrm{CH}_3\mathrm{CH}_3 + 3\mathrm{O}_2 \xrightarrow{(\mathrm{CH}_3\mathrm{COO})_2\mathrm{Mn},\ \Delta} $

C. $(\mathrm{CH}_3)_3\mathrm{CH} \xrightarrow{\mathrm{KMnO}_4} $

D. $ 2\mathrm{CH}_4 + \mathrm{O}_2 \xrightarrow{\mathrm{Cu}/523\ \mathrm{K}/100 \ \mathrm{atm}.} $

E. $\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \xrightarrow{\mathrm{KMnO}_4/\mathrm{H}^+} $

Choose the correct answer from the options given below :

A

B, D and E Only

B

A and D Only

C

A, C and E Only

D

C and D Only

Question 2: Palette 2/170

JEE Mains 2026 MCQ

$ \text { Consider the following reaction sequence } $

Compound $(\mathrm{y})$ develops characteristic colour with neutral $\mathrm{FeCl}_3$ solution.

Identify the INCORRECT statement from the following for the above sequence.

A

Compound y will dissolve in $\mathrm{NaHCO}_3$ and evolve a gas.

B

Compound x is more acidic than compound y .

C

Both compounds x and y will dissolve in NaOH .

D

Both compounds x and y will burn with sooty flame.

Question 3: Palette 3/170

JEE Mains 2026 MCQ

$ \text { From the following, how many compounds contain at least one secondary alcohol?} $

Choose the correct answer from the options given below :

A

Three

B

Two

C

Four

D

Five

Question 4: Palette 4/170

JEE Mains 2026 MCQ

A hydroxy compound $(\mathrm{X})$ with molar mass $122 \mathrm{~g} \mathrm{~mol}^{-1}$ is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of $290 \mathrm{~g} \mathrm{~mol}^{-1}$. The number of hydroxyl groups present in compound $(\mathrm{X})$ is:

A

2

B

4

C

3

D

5

Question 5: Palette 5/170

JEE Mains 2026 MCQ

A mixed ether $(\mathrm{P})$, when heated with excess of hot concentrated hydrogen iodide produces two different alkyl iodides which when treated with aq. NaOH give compounds $(\mathrm{Q})$ and $(\mathrm{R})$. Both $(\mathrm{Q})$ and $(\mathrm{R})$ give yellow precipitate with NaOI . Identify the mixed ether $(\mathrm{P})$ :

A

B

C

D

Question 6: Palette 6/170

JEE Mains 2026 MCQ

$ \text { 3, 3-Dimethyl-2-butanol cannot be prepared by : } $

$ \text { Choose the correct answer from the options given below : } $

A

B and E Only

B

B, C and E Only

C

B and C Only

D

B Only

Question 7: Palette 7/170

JEE Mains 2026 MCQ

Given below are two statements :

Statement I : Phenol on treatment with $\mathrm{CHCl}_3$ /aq. KOH under refluxing condition, followed by acidification produces $p$-hydroxy benzaldehyde as the major product and $o$-hydroxy benzaldehyde as the minor product.

Statement II : The mixture of $p$-hydroxybenzaldehyde and $o$ hydroxybenzaldehyde can be easily separated through steam distillation.

In the light of the above statements, choose the correct answer from the options given below

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are true

C

Both Statement I and Statement II are false

D

Statement I is false but Statement II is true

Question 8: Palette 8/170

JEE Mains 2026 MCQ

$ \text { Consider the following reaction. } $

Statement I : In the above reaction, product formed will be a mixture of benzyl alcohol and iodobenzene.

Statement II : In the above reaction, the $-\mathrm{O}-\mathrm{CH}_2-$ bond is cleaved to give the product.

In the light of the above statements, choose the correct answer from the options given below :

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

Question 9: Palette 9/170

JEE Mains 2026 MCQ

Consider the following reactions. Total number of electrons in the $\pi$ bonds and lone pair of electrons in the product $(X)$ is :

A

12

B

16

C

14

D

18

Question 10: Palette 10/170

JEE Mains 2026 MCQ

Consider the following sequence of reactions

The major product P is :

A

B

C

D

Question 11: Palette 11/170

JEE Mains 2026 MCQ

Consider compounds $\mathrm{A}, \mathrm{B}$ and C with following structural formulae

$ \begin{aligned} & \mathrm{A}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{OH} \\ & \mathrm{~B}=\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3 \\ & \mathrm{C}=\mathrm{HO}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}(\mathrm{OH})-\mathrm{CH}_3 \end{aligned} $

For the conversion of B from A , reagent (D) required is $\_\_\_\_$ and structural formula of product $(\mathrm{E})$ obtained when C undergoes same reaction using excess reagent (D) is $\_\_\_\_$ .

A

$ \begin{array}{|c|c|} \hline \text { D } & \text { E } \\ \hline \text { Conc. } \mathrm{H}_2 \mathrm{SO}_4 & \mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_3 \\ \hline \end{array} $

B

$ \begin{array}{|c|c|} \hline \mathrm{D} & \mathrm{E} \\ \hline \mathrm{PCC} & \mathrm{HO}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}_2 \\ \hline \end{array} $

C

$ \begin{array}{|c|c|} \hline \text { D } & \text { E } \\ \hline \text { PCC } & \mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_2 \\ \hline \end{array} $

D

$ \begin{array}{|c|c|} \hline \text { D } & \mathrm{E} \\ \hline \text { Conc. } \mathrm{H}_2 \mathrm{SO}_4 \text { or } \mathrm{H}_3 \mathrm{PO}_4 & \mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_2 \\ \hline \end{array} $

Question 12: Palette 12/170

JEE Mains 2026 MCQ

$ \text { Identify the colour of compound ' } \mathrm{X} \text { ' in the sequence of the reaction. } $

A

Violet

B

Green

C

Red

D

Colourless

Question 13: Palette 13/170

JEE Mains 2025 MCQ

Given below are two statements :

Statement I : Dimethyl ether is completely soluble in water. However, diethyl ether is soluble in water to a very small extent.

Statement II : Sodium metal can be used to dry diethyl ether and not ethyl alcohol.

In the light of given statements. choose the correct answer from the options given below

A

Statement I is false but Statement II are true

B

Statement I is true but Statement II is false

C

Both Statement I and Statement II are true

D

Both Statement I and Statement II are False

Question 14: Palette 14/170

JEE Mains 2025 MCQ

Benzene is treated with oleum to produce compound $(\mathrm{X})$ which when further heated with molten sodium hydroxide followed by acidification produces compound $(\mathrm{Y})$. The compound Y is treated with zinc metal to produce compound $(Z)$. Identify the structure of compound $(Z)$ from the following option.

A

B

C

D

Question 15: Palette 15/170

JEE Mains 2025 MCQ

Which one of the following, with HBr will give a phenol?

A

B

C

D

Question 16: Palette 16/170

JEE Mains 2025 MCQ

Given below are two statements :

Statement I :

Statement II : In , intramolecular substitution takes place first by involving lone pair of electrons on nitrogen.

In the light of the above statements, choose the most appropriate answer from the options given below

A

Both Statement I and Statement II are correct

B

Statement I is incorrect but Statement II is correct

C

Both Statement I and Statement II are incorrect

D

Statement I is correct but Statement II is incorrect

Question 17: Palette 17/170

JEE Mains 2025 MCQ

Given below are two statements :

Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C -atoms.

Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes.

In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is false but Statement II is true

B

Both Statement I and Statement II are true

C

Statement I is true but Statement II is false

D

Both Statement I and Statement II are false

Question 18: Palette 18/170

JEE Mains 2025 MCQ

What amount of bromine will be required to convert 2 g of phenol into 2,4,6-tribromophenol?

(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1}$ of $\mathrm{C}, \mathrm{H}, \mathrm{O}, \mathrm{Br}$ are $12,1,16,80$ respectively )

A

6.0 g

B

10.22 g

C

20.44 g

D

4.0 g

Question 19: Palette 19/170

JEE Mains 2024 MCQ

Match List I with List II

Choose the correct answer from the options given below :

A

(A)-(II), (B)-(IV), (C)-(I), (D)-(III)

B

(A)-(I), (B)-(IV), (C)-(II), (D)-(III)

C

(A)-(III), (B)-(II), (C)-(I), (D)-(IV)

D

(A)-(IV), (B)-(II), (C)-(III), (D)-(I)

Question 20: Palette 20/170

JEE Mains 2024 MCQ

Which one the following compounds will readily react with dilute $\mathrm{NaOH}$ ?

A

$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}$

B

$\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$

C

$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}$

D

$\left(\mathrm{CH}_3\right)_3 \mathrm{COH}$

Question 21: Palette 21/170

JEE Mains 2024 MCQ

Identify the major products A and B respectively in the following set of reactions.

A

B

C

D

Question 22: Palette 22/170

JEE Mains 2024 MCQ

The major products formed :

A and B respectively are :

A

B

C

D

Question 23: Palette 23/170

JEE Mains 2024 MCQ

In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is __________.

A

B

C

D

Question 24: Palette 24/170

JEE Mains 2024 MCQ

Consider the above reaction sequence and identify the major product P.

A

Methanoic acid

B

Methoxymethane

C

Methane

D

Methanal

Question 25: Palette 25/170

JEE Mains 2024 MCQ

Which one of the following reactions is NOT possible?

A

B

C

D

Question 26: Palette 26/170

JEE Mains 2024 MCQ

Given below are two statement :

Statements I : Bromination of phenol in solvent with low polarity such as $\mathrm{CHCl}_3$ or $\mathrm{CS}_2$ requires Lewis acid catalyst.

Statements II : The Lewis acid catalyst polarises the bromine to generate $\mathrm{Br}^{+}$.

In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are true

C

Statement I is false but Statement II is true

D

Both Statement I and Statement II are false

Question 27: Palette 27/170

JEE Mains 2024 MCQ

For the Compounds :

(A) $\mathrm{H}_3 \mathrm{C}-\mathrm{CH}_2-\mathrm{O}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3$

(B) $\mathrm{H}_3 \mathrm{C}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3$

(C)

(D)

The increasing order of boiling point is :

Choose the correct answer from the options given below :

A

$ (\mathrm{D})<(\mathrm{C})<(\mathrm{A})<(\mathrm{B}) $

B

$ (\mathrm{B})<(\mathrm{A})<(\mathrm{C})<(\mathrm{D}) $

C

$ (\mathrm{A})<(\mathrm{B})<(\mathrm{C})<(\mathrm{D}) $

D

$\mathrm{ (B)<(A)<(D)<(C)}$

Question 28: Palette 28/170

JEE Mains 2024 MCQ

Common name of Benzene - 1,2 - diol is -

A

catechol

B

quinol

C

o-cresol

D

resorcinol

Question 29: Palette 29/170

JEE Mains 2024 MCQ

Match List - I with List - II.

List I (Reactants)	List II (Product)
(A) Phenol, Zn/Δ	(I) Salicylaldehyde
(B) Phenol, CHCl3, NaOH, HCl	(II) Salicylic acid
(C) Phenol, CO2, NaOH, HCl	(III) Benzene
(D) Phenol, Conc. HNO3	(IV) Picric acid

Choose the correct answer from the options given below :

A

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

B

(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

C

(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

D

(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Question 30: Palette 30/170

JEE Mains 2024 MCQ

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Alcohols react both as nucleophiles and electrophiles.

Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.

In the light of the above statements, choose the correct answer from the options given below:

A

$A$ is false but $R$ is true.

B

Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$.

C

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.

D

$A$ is true but $R$ is false.

Question 31: Palette 31/170

JEE Mains 2024 MCQ

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $\mathrm{pK}_{\mathrm{a}}$ value of phenol is 10.0 while that of ethanol is 15.9 .

Reason R: Ethanol is stronger acid than phenol.

In the light of the above statements, choose the correct answer from the options given below:

A

A is false but R is true.

B

Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$.

C

Both $\mathrm{A}$ and $\mathrm{R}$ are true and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$.

D

$A$ is true but $R$ is false.

Question 32: Palette 32/170

JEE Mains 2024 MCQ

Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results

A

Salicylic acid

B

Benzene-1,2-diol

C

2-Hydroxybenzaldehyde

D

Benzene-1,3-diol

Question 33: Palette 33/170

JEE Mains 2024 MCQ

Match List I with List II

	List - I (Compound)		List - II ($\mathrm{pK_a}$ value)
(A)	Ethanol	(I)	10.0
(B)	Phenol	(II)	15.9
(C)	m-Nitrophenol	(III)	7.1
(D)	p-Nitrophenol	(IV)	8.3

Choose the correct answer from the options given below:

A

A-I, B-II, C-III, D-IV

B

A-IV, B-I, C-II, D-III

C

A-II, B-I, C-IV, D-III

D

A-III, B-IV, C-I, D-II

Question 34: Palette 34/170

JEE Mains 2024 MCQ

The major product(P) in the following reaction is

A

B

C

D

Question 35: Palette 35/170

JEE Mains 2024 MCQ

Major product formed in the following reaction is a mixture of :

A

B

C

D

Question 36: Palette 36/170

JEE Mains 2024 MCQ

Phenolic group can be identified by a positive:

A

Tollen's test

B

Phthalein dye test

C

Carbylamine test

D

Lucas test

Question 37: Palette 37/170

JEE Mains 2024 MCQ

Match List - I with List - II.

	List - I (Reaction)		List - II (Reagent(s))
(A)		(I)	$\mathrm{Na_2Cr_2O_7,H_2SO_4}$
(B)		(II)	(i) $\mathrm(NaOH)$, (ii) $\mathrm{CH_3Cl}$
(C)		(III)	(i) $\mathrm{NaOH,CHCl_3}$, (ii) $\mathrm{NaOH}$, (iii) $\mathrm{HCl}$
(D)		(IV)	(i) $\mathrm{NaOH}$, (ii) $\mathrm{CO_2}$, (iii) $\mathrm{HCl}$

Choose the correct answer from the options given below :

A

$\text { (A)-(II), (B)-(I), (C)-(III), (D)-(IV) }$

B

$\text { (A)-(IV), (B)-(I), (C)-(III), (D)-(II) }$

C

$\text { (A)-(IV), (B)-(III), (C)-(I), (D)-(II) }$

D

$\text { (A)-(II), (B)-(III), (C)-(I), (D)-(IV) }$

Question 38: Palette 38/170

JEE Mains 2024 MCQ

Given below are two statements :

Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol.

Statement (II) : Ethanol will give immediate turbidity with Lucas reagent.

In the light of the above statements, choose the correct answer from the options given below :

A

Statement I is true but Statement II is false

B

Both Statement I and Statement II are true

C

Both Statement I and Statement II are false

D

Statement I is false but Statement II is true

Question 39: Palette 39/170

JEE Mains 2024 MCQ

The ascending order of acidity of $-\mathrm{OH}$ group in the following compounds is :

Choose the correct answer from the options given below:

A

(A) < (D) < (C) < (B) < (E)

B

(C) < (A) < (D) < (B) < (E)

C

(C) < (D) < (B) < (A) < (E)

D

(A) < (C) < (D) < (B) < (E)

Question 40: Palette 40/170

JEE Mains 2023 MCQ

'A' formed in the above reaction is

A

B

C

D

Question 41: Palette 41/170

JEE Mains 2023 MCQ

The major product for the following reaction is:

A

B

C

D

Question 42: Palette 42/170

JEE Mains 2023 MCQ

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Order of acidic nature of the following compounds is A > B > C.

Reason R : Fluoro is a stronger electron withdrawing group than Chloro group.

In the light of the above statements, choose the correct answer from the options given below:

A

Both A and R are correct but R is NOT the correct explanation of A

B

A is false but R is true

C

A is true but R is false

D

Both A and R are correct and R is the correct explanation of A

Question 43: Palette 43/170

JEE Mains 2023 MCQ

2-Methyl propyl bromide reacts with $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{O}^{-}$ and gives 'A' whereas on reaction with $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$ it gives 'B'. The mechanism followed in these reactions and the products 'A' and 'B' respectively are :

A

$\mathrm{S}_{N} 1, A=$ tert-butyl ethyl ether; $\mathrm{S}_{N} 2, B=$ iso-butyl ethyl ether

B

$\mathrm{S}_{\mathrm{N}} 1, \mathrm{~A}=$ tert-butyl ethyl ether; $\mathrm{S}_{\mathrm{N}} 1, \mathrm{~B}=$ 2-butyl ethyl ether

C

$\mathrm{S}_{\mathrm{N}} 2, \mathrm{~A}=$ iso-butyl ethyl ether; $\mathrm{S}_{\mathrm{N}} 1, \mathrm{~B}=$ tert-butyl ethyl ether

D

$\mathrm{S}_{\mathrm{N}} 2, \mathrm{~A}=$ 2-butyl ethyl ether; $\mathrm{S}_{\mathrm{N}} 2, \mathrm{~B}=$ iso-butyl ethyl ether

Question 44: Palette 44/170

JEE Mains 2023 MCQ

Correct statements for the given reaction are :

A. Compound '$\mathrm{B}$' is aromatic

B. The completion of above reaction is very slow

C. 'A' shows tautomerism

D. The bond lengths of C-C in compound $B$ are found to be same

Choose the correct answer from the options given below:

A

B, C and D only

B

A, C and D only

C

A, B and D only

D

A, B and C only

Question 45: Palette 45/170

JEE Mains 2023 MCQ

Compound 'B' is

A

B

C

D

Question 46: Palette 46/170

JEE Mains 2023 MCQ

Product [X] formed in the above reaction is :

A

B

C

$\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}$

D

$\mathrm{H}_{3} \mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}=\mathrm{CH}_{2}$

Question 47: Palette 47/170

JEE Mains 2023 MCQ

Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction

A

d, b, a, c

B

b, c, a, d

C

c, a, b, d

D

d, b, c, a

Question 48: Palette 48/170

JEE Mains 2023 MCQ

The correct order for acidity of the following hydroxyl compound is :

A. $\mathrm{CH}_{3} \mathrm{OH}$

B. $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COH}$

C.

D.

E.

Choose the correct answer from the options given below:

A

E > C > D > A > B

B

D > E > C > A > B

C

E > D > C > B > A

D

C > E > D > B > A

Question 49: Palette 49/170

JEE Mains 2023 MCQ

Incorrect method of preparation for alcohols from the following is:

A

Hydroboration-oxidation of alkene.

B

Reaction of Ketone with $\mathrm{RMgBr}$ followed by hydrolysis.

C

Ozonolysis of alkene.

D

Reaction of alkyl halide with aqueous $\mathrm{NaOH}$.

Question 50: Palette 50/170

JEE Mains 2023 MCQ

Suitable reaction condition for preparation of Methyl phenyl ether is

A

Benzene, MeBr

B

$\mathrm{Ph{O^\Theta }N{a^ \oplus }}$, MeBr

C

Ph - Br, $\mathrm{Me{O^\Theta }N{a^ \oplus }}$

D

$\mathrm{Ph{O^\Theta }N{a^ \oplus }}$, MeOH

Question 51: Palette 51/170

JEE Mains 2023 MCQ

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Butan -1- ol has higher boiling point than ethoxyethane.

Reason R: Extensive hydrogen bonding leads to stronger association of molecules.

In the light of the above statements, choose the correct answer from the options given below:

A

A is false but R is true

B

Both A and R are true but R is not the correct explanation of A

C

Both A and R are true and R is the correct explanation of A

D

A is true but R is false

Question 52: Palette 52/170

JEE Mains 2023 MCQ

The water gas on reacting with cobalt as a catalyst forms

A

Methanoic acid

B

Methanol

C

Methanal

D

Ethanol

Question 53: Palette 53/170

JEE Mains 2023 MCQ

The strongest acid from the following is

A

B

C

D

Question 54: Palette 54/170

JEE Mains 2023 MCQ

The graph which represents the following reaction is :

A

B

C

D

Question 55: Palette 55/170

JEE Mains 2023 MCQ

Identify the incorrect option from the following

A

B

C

D

Question 56: Palette 56/170

JEE Mains 2023 MCQ

Decreasing order of dehydration of the following alcohols is

A

d > b > c > a

B

b > d > c > a

C

a > d > b > c

D

b > a > d > c

Question 57: Palette 57/170

JEE Mains 2023 MCQ

Compound $\mathrm{A}, \mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{5}$, given a tetraacetate with $\mathrm{Ac}_{2} \mathrm{O}$ and oxidation of $\mathrm{A}$ with $\mathrm{Br}_{2}-\mathrm{H}_{2} \mathrm{O}$ gives an acid, $\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{6}$. Reduction of $\mathrm{A}$ with $\mathrm{HI}$ gives isopentane. The possible structure of $\mathrm{A}$ is

A

B

C

D

Question 58: Palette 58/170

JEE Mains 2023 MCQ

An organic compound 'A' with emperical formula $\mathrm{C}_{6} \mathrm{H}_{6} \mathrm{O}$ gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of B. B is

A

B

C

D

Question 59: Palette 59/170

JEE Mains 2023 MCQ

The correct order of $\mathrm{pK}_{\mathrm{a}}$ values for the following compounds is:

A

$ \mathrm{a}>\mathrm{b}>\mathrm{c}>\mathrm{d}$

B

$c > a > d > b$

C

$\mathrm{b}>\mathrm{d}>\mathrm{a}>\mathrm{c}$

D

$b > a > d > c$

Question 60: Palette 60/170

JEE Mains 2023 MCQ

A solution of $\mathrm{Cr O_5}$ in amyl alcohol has a __________ colour.

A

Yellow

B

Orange-Red

C

Green

D

Blue

Question 61: Palette 61/170

JEE Mains 2023 MCQ

Find out the major product for the following reaction.

A

B

C

D

Question 62: Palette 62/170

JEE Mains 2023 MCQ

The increasing order of $\mathrm{pK_a}$ for the following phenols is

(A) 2, 4 - Dinitrophenol

(B) 4 - Nitrophenol

(C) 2, 4, 5 - Trimethylphenol

(D) Phenol

(E) 3-Chlorophenol

Choose the correct answer from the option given below :

A

(A), (E), (B), (D), (C)

B

(C), (E), (D), (B), (A)

C

(C), (D), (E), (B), (A)

D

(A), (B), (E), (D), (C)

Question 63: Palette 63/170

JEE Mains 2023 MCQ

Find out the major product from the following reaction.

A

B

C

D

Question 64: Palette 64/170

JEE Mains 2023 MCQ

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life.

Reason R : Butylated hydroxy anisole is more reactive towards oxygen than food.

In the light of the above statements, choose the most appropriate answer from the options given below

A

A is correct but R is not correct

B

Both A and R are correct but R is NOT the correct explanation of A

C

Both A and R are correct and R is the correct explanation of A

D

A is not correct but R is correct

Question 65: Palette 65/170

JEE Mains 2023 MCQ

In the cumene to phenol preparation in presence of air, the intermediate is

A

B

C

D

Question 66: Palette 66/170

JEE Mains 2023 MCQ

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : Acetal / Ketal is stable in basic medium.

Reason R : The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium.

In the light of the above statements, choose the correct answer from the options given below :

A

A is false but R is true.

B

Both A and R are true but R is NOT the correct explanation of A

C

Both A and R are true and R is the correct explanation of A

D

A is true but R is false.

Question 67: Palette 67/170

JEE Mains 2023 MCQ

'A' and 'B' formed in the following set of reactions are :

A

B

C

D

Question 68: Palette 68/170

JEE Mains 2022 MCQ

When ethanol is heated with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is

A

formaldehyde

B

formic acid

C

glycol

D

ethanoic acid

Question 69: Palette 69/170

JEE Mains 2022 MCQ

A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in NaHCO₃ solution. Compound 'X' also gives violet colour with neutral FeCl₃ solution. The compound 'X' is :

A

B

C

D

Question 70: Palette 70/170

JEE Mains 2022 MCQ

Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.

A

B

C

D

Question 71: Palette 71/170

JEE Mains 2022 MCQ

Choose the correct option for the following reactions.

A

'A' and 'B' are both Markovnikov addition products.

B

'A' is Markovnikov product and 'B' is anti-Markovnikov product.

C

'A' and 'B' are both anti-Markovnikov products.

D

'B' is Markovnikov and 'A' is anti-Markovnikov product.

Question 72: Palette 72/170

JEE Mains 2022 MCQ

Identify the major products A and B for the below given reaction sequence.

A

B

C

D

Question 73: Palette 73/170

JEE Mains 2022 MCQ

In the above reaction product B is :

A

B

C

D

Question 74: Palette 74/170

JEE Mains 2022 MCQ

Hydrolysis of which compound will give carbolic acid?

A

Cumene

B

Benzenediazonium chloride

C

Benzal chloride

D

Ethylene glycol ketal

Question 75: Palette 75/170

JEE Mains 2022 MCQ

The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to :

A

Hyperconjugation in substrate

B

Polarity of solvent

C

Free radical formation

D

Electromeric effect the substrate

Question 76: Palette 76/170

JEE Mains 2022 MCQ

Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide $(\mathrm{PhMgBr})$ followed by acidic hydrolysis?

A

CH₃ $-$ C $\equiv$ N

B

Ph $-$ C $\equiv$ N

C

D

Question 77: Palette 77/170

JEE Mains 2022 MCQ

The major product of the following reaction is

A

B

C

D

Question 78: Palette 78/170

JEE Mains 2022 MCQ

Most stable product of the following reaction is:

A

B

C

D

Question 79: Palette 79/170

JEE Mains 2022 MCQ

Given below are two statements :

Statement I : On heating with $\mathrm{KHSO}_{4}$, glycerol is dehydrated and acrolein is formed.

Statement II : Acrolein has fruity odour and can be used to test glycerol's presence.

Choose the correct option.

A

Both Statement I and Statement II are correct.

B

Both Statement I and Statement II are incorrect.

C

Statement I is correct but Statement II is incorrect.

D

Statement I is incorrect but Statement II is correct.

Question 80: Palette 80/170

JEE Mains 2022 MCQ

Consider the above reaction sequence. Identify the component A and component B :

A

B

C

D

Question 81: Palette 81/170

JEE Mains 2022 MCQ

Given below are two statements :

Statement I : Phenols are weakly acidic.

Statement II : Therefore they are freely soluble in NaOH solution and are weaker acids than alcohols and water.

Choose the most appropriate option :

A

Both Statement I and Statement II are correct.

B

Both Statement I and Statement II are incorrect.

C

Statement I is correct but Statement II is incorrect.

D

Statement I is incorrect but Statement II is correct.

Question 82: Palette 82/170

JEE Mains 2022 MCQ

The major product (P) of the given reaction is

(where, Me is $-$CH₃)

A

B

C

D

Question 83: Palette 83/170

JEE Mains 2022 MCQ

Match List-I with List-II.

	List-I		List-II
(A)		I.	$B{r_2}$ in $C{S_2}$
(B)		II.	$N{a_2}C{r_2}{O_7}/{H_2}S{O_4}$
(C)		III.	$Zn$
(D)		IV.	$CHC{l_3}/NaOH$

Choose the correct answer from the options given below :

A

A-IV, B-III, C-II, D-I

B

A-IV, B-III, C-I, D-II

C

A-II, B-III, C-I, D-IV

D

A-IV, B-II, C-III, D-I

Question 84: Palette 84/170

JEE Mains 2022 MCQ

Consider the above reaction sequence and identify the product B.

A

B

C

D

Question 85: Palette 85/170

JEE Mains 2022 MCQ

In the given reaction

'A' can be

A

benzyl bromide

B

bromobenzene

C

cyclohexyl bromide

D

methyl bromide

Question 86: Palette 86/170

JEE Mains 2022 MCQ

The major product formed in the following reaction, is

A

B

C

D

Question 87: Palette 87/170

JEE Mains 2022 MCQ

The intermediate X, in the reaction :

A

B

C

D

Question 88: Palette 88/170

JEE Mains 2022 MCQ

In the following reaction :

The compounds A and B respectively are :

A

B

C

D

Question 89: Palette 89/170

JEE Mains 2022 MCQ

Hex-4-ene-2-ol on treatment with PCC gives 'A'. 'A' on reaction with sodium hypoiodite gives 'B', which on further heating with soda lime gives 'C'. The compound 'C' is :

A

2-pentene

B

proponaldehyde

C

2-butene

D

4-methylpent-2-ene

Question 90: Palette 90/170

JEE Mains 2021 MCQ

The major product formed in the following reaction is :

A

B

C

D

Question 91: Palette 91/170

JEE Mains 2021 MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Treatment of bromine water with propene yields 1-bromopropan-2-ol.

Reason (R) : Attack of water on bromonium ion follows Markovnikov rule and results in 1-bromopropan-2-ol.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both (A) and (R) are true but (R) is not the correct explanation of (A)

B

(A) is false but (R) is true

C

Both (A) and (R) are true and (R) is the correct explanation of (A)

D

(A) is true but (R) is false

Question 92: Palette 92/170

JEE Mains 2021 MCQ

The major product of the following reaction, if it occurs by S_N2 mechanism is :

A

B

C

D

Question 93: Palette 93/170

JEE Mains 2021 MCQ

In the following sequence of reactions, the final product D is :

A

B

CH₃ $-$ CH = CH $-$ CH₂ $-$ CH₂ $-$ CH₂ $-$ COOH

C

H₃C $-$ CH = CH $-$ CH(OH) $-$ CH₂ $-$ CH₂ $-$ CH₃

D

Question 94: Palette 94/170

JEE Mains 2021 MCQ

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Synthesis of ethyl phenyl ether may be achieved by Williamson synthesis.

Reason (R) : Reaction of bromobenzene with sodium ethoxide yields ethyl phenyl ether.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both (A) and (R) are correct and (R) is the correct explanation of (A)

B

(A) is correct but (R) is not correct

C

(A) is not correct but (R) is correct

D

Both (A) and (R) are correct but (R) is not the correct explanation of (A).

Question 95: Palette 95/170

JEE Mains 2021 MCQ

Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H₂SO₄ ?

A

B

C

D

Question 96: Palette 96/170

JEE Mains 2021 MCQ

The correct options for the products A and B of the following reactions are :

A

B

C

D

Question 97: Palette 97/170

JEE Mains 2021 MCQ

Consider the above reaction, the major product "P" formed is :

A

B

C

D

Question 98: Palette 98/170

JEE Mains 2021 MCQ

Consider the above reaction, and choose the correct statement :

A

The reaction is not possible in acidic medium

B

Both compounds A and B are formed equally

C

Compound A will be the major product

D

Compound B will be the major product

Question 99: Palette 99/170

JEE Mains 2021 MCQ

Consider the above reaction and identify the Product P :

A

B

C

D

Question 100: Palette 100/170

JEE Mains 2021 MCQ

Consider the above reaction, the major product 'P' is :

A

B

C

D

Question 101: Palette 101/170

JEE Mains 2021 MCQ

Which of the following compounds will provide a tertiary alcohol or reaction with excess of CH₃MgBr followed by hydrolysis?

A

B

C

D

Question 102: Palette 102/170

JEE Mains 2021 MCQ

An organic compound A (C₆H₆O) gives dark green colouration with ferric chloride. On treatment with CHCl₃ and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C.

A

B

C

D

Question 103: Palette 103/170

JEE Mains 2021 MCQ

In the given reaction

3-Bromo-2, 2-dimethyl butane $\buildrel {{C_2}{H_5}OH} \over \longrightarrow \mathop {'A'}\limits_{(Major\,\Pr oduct)} $

Product A is :

A

2-Ethoxy-3, 3-dimethyl butane

B

1-Ethoxy-3, 3-dimethyl butane

C

2-Ethoxy-2, 3-dimethyl butane

D

2-Hydroxy-3, 3-dimethyl butane

Question 104: Palette 104/170

JEE Mains 2021 MCQ

The structure of X is :

A

B

C

D

Question 105: Palette 105/170

JEE Mains 2021 MCQ

Ceric ammonium nitrate and CHCl₃/alc. KOH are used for the identification of functional groups present in __________ and _______ respectively.

A

amine, alcohol

B

alcohol, phenol

C

alcohol, amine

D

amine, phenol

Question 106: Palette 106/170

JEE Mains 2021 MCQ

Identify A in the given reaction.

A

B

C

D

Question 107: Palette 107/170

JEE Mains 2021 MCQ

Identify the major products A and B respectively in the following reactions of phenol :

A

B

C

D

Question 108: Palette 108/170

JEE Mains 2021 MCQ

Given below are two statements :

Statement I : o-Nitrophenol is steam volatile due to intramolecular hydrogen bonding.

Statement II : o-Nitrophenol has high melting due to hydrogen bonding.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both Statement I and Statement II are true

B

Statement I is true but Statement II is false

C

Statement I is false but Statement II is true

D

Both Statement I and Statement II are false

Question 109: Palette 109/170

JEE Mains 2021 MCQ

B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B.

A

1, 1-Dichlorobutane and Butanal

B

2, 2-Dichlorobutane and Butan-2-one

C

1, 1-Dichlorobutane and 2-Butanone

D

2, 2-Dichlorobutane and Butanal

Question 110: Palette 110/170

JEE Mains 2021 MCQ

What is 'X' in the given reaction?

A

B

C

D

Question 111: Palette 111/170

JEE Mains 2021 MCQ

Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. H₂SO₄ followed by treatment with NaOH ?

A

B

C

D

Question 112: Palette 112/170

JEE Mains 2021 MCQ

What is the final product (major) 'A' in the given reaction ?

A

B

C

D

Question 113: Palette 113/170

JEE Mains 2020 MCQ

The major product of the following reaction is :

A

B

C

D

Question 114: Palette 114/170

JEE Mains 2020 MCQ

The major product [R] in the following sequence of reactions as :

A

B

C

D

Question 115: Palette 115/170

JEE Mains 2020 MCQ

The major product [B] in the following reactions is :

A

CH₃ – CH₂ – CH = CH – CH₃

B

CH₂ = CH₂

C

D

Question 116: Palette 116/170

JEE Mains 2020 MCQ

When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are these alkenes?

A

B

C

D

Question 117: Palette 117/170

JEE Mains 2020 MCQ

Consider the following reaction :
The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these –OH group(s)?

A

(b) only

B

(b) and (d)

C

(c) and (d)

D

(d) only

Question 118: Palette 118/170

JEE Mains 2020 MCQ

The major product of the following reaction is :

A

B

C

D

Question 119: Palette 119/170

JEE Mains 2020 MCQ

An organic compound ‘A’ (C₉H₁₀O) when treated with conc. HI undergoes cleavage to yield compounds ‘B’ and ‘C’. ‘B’ gives yellow precipitate with AgNO₃ where as ‘C’ tautomerizes to ‘D’. ‘D’ gives positive iodoform test. ‘A’ could be

A

B

C

D

Question 120: Palette 120/170

JEE Mains 2020 MCQ

The major aromatic product C in the following reaction sequence will be :

A

B

C

D

Question 121: Palette 121/170

JEE Mains 2020 MCQ

Among the compounds A and B with molecular formula C₉H₁₈O₃ , A is having higher boiling point the B. The possible structures of A and B are :

A

B

C

D

Question 122: Palette 122/170

JEE Mains 2020 MCQ

The major product of the following reaction is :

A

B

C

D

Question 123: Palette 123/170

JEE Mains 2020 MCQ

Arrange the following compounds in increasing order of C–OH bond length :
methanol, phenol, p-ethoxyphenol

A

phenol < methanol < p-ethoxyphenol

B

methanol < p-ethoxyphenol < phenol

C

methanol < phenol < p-ethoxyphenol

D

phenol < p-ethoxyphenol < methanol

Question 124: Palette 124/170

JEE Mains 2020 MCQ

The correct order of stability for the following alkoxides is :

A

(C) > (B) > (A)

B

(C) > (A) > (B)

C

(B) > (C) > (A)

D

(B) > (A) > (C)

Question 125: Palette 125/170

JEE Mains 2019 MCQ

What will be the major product when m-cresol is reacted with propargyl bromide (HC$ \equiv $C–CH₂Br) in presence of K₂CO₃ in acetone?

A

B

C

D

Question 126: Palette 126/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 127: Palette 127/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 128: Palette 128/170

JEE Mains 2019 MCQ

The major product of the following reaction is :
${\rm{C}}{{\rm{H}}_3}{\rm{CH = CHC}}{{\rm{O}}_2}{\rm{CH_3 }}\buildrel {LiAl{H_4}} \over \longrightarrow $

A

CH₃CH₂CH₂CHO

B

CH₃CH₂CH₂CO₂CH₃

C

CH₃CH = CHCH₂OH

D

CH₃CH₂CH₂CH₂OH

Question 129: Palette 129/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 130: Palette 130/170

JEE Mains 2019 MCQ

Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0ºC. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is

A

B

C

D

Question 131: Palette 131/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 132: Palette 132/170

JEE Mains 2019 MCQ

can not be prepared by -

A

CH₃CH₂COCH₃ + PhMgX

B

PhCOCH₃ + CH₃CH₂MgX

C

PhCOCH₂CH₃ + CH₃MgX

D

HCHO + PhCH(CH₃)CH₂MgX

Question 133: Palette 133/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 134: Palette 134/170

JEE Mains 2019 MCQ

The major product of the following reaction is :

A

B

C

D

Question 135: Palette 135/170

JEE Mains 2019 MCQ

The major product of the following reaction is

A

B

C

D

Question 136: Palette 136/170

JEE Mains 2019 MCQ

The major product of the following reaction

A

B

C

D

Question 137: Palette 137/170

JEE Mains 2019 MCQ

The increasing order of the pKa values of the following compounds is :

A

B < C < D < A

B

B < C < A < D

C

D < A < C < B

D

C < B < A < D

Question 138: Palette 138/170

JEE Mains 2019 MCQ

The major product 'X' formed in the following reaction is :

A

B

C

D

Question 139: Palette 139/170

JEE Mains 2019 MSQ

Which of the following compounds reacts with ethylmagnesium bromide and also decolourizes bromine water solution:

A

B

C

D

Question 140: Palette 140/170

JEE Mains 2018 MCQ

Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br₂ to form product B. A and B are respectively :

A

B

C

D

Question 141: Palette 141/170

JEE Mains 2018 MCQ

Phenol on treatment with CO₂ in the presence of NaOH followed by acidification produces compound X as the major product. X on treatment with (CH₃CO)₂O in the presence of catalytic amount of H₂SO₄ produces:

A

B

C

D

Question 142: Palette 142/170

JEE Mains 2018 MCQ

The major product formed in the following reaction is :

A

B

C

D

Question 143: Palette 143/170

JEE Mains 2018 MCQ

The total number of optically active compounds formed in the following reactio is :

A

Two

B

Four

C

Six

D

Zero

Question 144: Palette 144/170

JEE Mains 2018 MCQ

The major product of the following reaction is :

A

B

C

D

Question 145: Palette 145/170

JEE Mains 2017 MCQ

The increasing order of the boiling points for the following compounds is :

A

(III) < (IV) < (II) < (I)

B

(IV) < (III) < (I) < (II)

C

(II) < (III) < (IV) < (I)

D

(III) < (II) < (I) < (IV)

Question 146: Palette 146/170

JEE Mains 2017 MCQ

The major product of the following reaction is :

A

B

C

D

Question 147: Palette 147/170

JEE Mains 2016 MCQ

Bouveault-Blanc reduction reaction involves :

A

Reduction of an acyl halide with H₂/Pd.

B

Reduction of an ester with Na/C₂H₅OH.

C

Reduction of a carbonyl compound with Na/Hg and HCl.

D

Reduction of an anhydride with LiAlH₄.

Question 148: Palette 148/170

JEE Mains 2016 MCQ

The gas evolved on heating CH₃MgBr in methanol is :

A

HBr

B

Methane

C

Ethane

D

Propane

Question 149: Palette 149/170

JEE Mains 2016 MCQ

$2$-chloro-$2$-methylpentane on reaction with sodium methoxide in methanol yields:

A

All of these

B

$(a)$ and $(c)$

C

$(c)$ only

D

$(a)$ and $(b)$

Question 150: Palette 150/170

JEE Mains 2016 MCQ

The product of the reaction given below is :

A

B

C

D

Question 151: Palette 151/170

JEE Mains 2014 MCQ

The most suitable reagent for the conversion of R - CH₂ - OH $\to$ R - CHO is:

A

CrO₃

B

PCC (Pyridinium Chlorochromate)

C

KMnO₄

D

K₂Cr₂O₇

Question 152: Palette 152/170

JEE Mains 2013 MCQ

An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:

A

tertiary alcohol by S_N1

B

secondary alcohol by S_N2

C

tertiary alcohol by S_N2

D

secondary alcohol by S_N1

Question 153: Palette 153/170

JEE Mains 2013 MCQ

Arrange the following compounds in order of decreasing acidity :

A

${\rm I}{\rm I} > {\rm I}V > {\rm I} > {\rm I}{\rm I}{\rm I}$

B

${\rm I} > {\rm I}{\rm I} > {\rm I}{\rm I}{\rm I} > {\rm I}V$

C

${\rm I}{\rm I}{\rm I} > {\rm I} > {\rm I}{\rm I} > {\rm I}V$

D

${\rm I}V > {\rm I}{\rm I}{\rm I} > {\rm I} > {\rm I}{\rm I}$

Question 154: Palette 154/170

JEE Mains 2012 MCQ

Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because :

A

o–Nitrophenol is more volatile in steam than those of m – and p–isomers

B

o–Nitrophenol shows Intramolecular H–bonding

C

o–Nitrophenol shows Intermolecular H–bonding

D

Melting point of o–Nitrophenol is lower than those of m–and p–isomers.

Question 155: Palette 155/170

JEE Mains 2011 MCQ

Phenol is heated with a solution of mixture of KBr and KBrO₃. The major product obtained in the above reaction is

A

3-Bromophenol

B

4-Bromophenol

C

2, 4, 6- Tribromophenol

D

2-Bromophenol

Question 156: Palette 156/170

JEE Mains 2010 MCQ

From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl₂, is

A

2–Butanol

B

2–Methylpropan–2–ol

C

2–Methylpropanol

D

1–Butanol

Question 157: Palette 157/170

JEE Mains 2009 MCQ

The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is :

A

benzoic acid

B

salicylaldehyde

C

salicylic acid

D

phthalic acid

Question 158: Palette 158/170

JEE Mains 2008 MCQ

Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives

A

2,4,6-trinitrobenzene

B

o-nitrophenol

C

p-nitrophenol

D

nitrobenzene

Question 159: Palette 159/170

JEE Mains 2007 MCQ

In the following sequence of reactions,
CH₃CH₂OH $\buildrel {P + {I_2}} \over \longrightarrow $ A $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{ether}^{Mg}} $ B $\buildrel {HCHO} \over \longrightarrow $ C $\buildrel {{H_2}O} \over \longrightarrow $ D
the compound ‘D’ is

A

butanal

B

n-butyl alcohol

C

n-propyl alcohol

D

propanal

Question 160: Palette 160/170

JEE Mains 2006 MCQ

HBr reacts with CH₂ = CH – OCH₃ under anhydrous conditions at room temperature to give

A

CH₃CHO and CH₃Br

B

BrCH₂CHO and CH₃OH

C

BrCH₂ – CH₂ – OCH₃

D

H₃C – CHBr – OCH₃

Question 161: Palette 161/170

JEE Mains 2006 MCQ

The structure of the compound that gives a tribromo derivative on treatment with bromine water is

A

B

C

D

Question 162: Palette 162/170

JEE Mains 2006 MCQ

Phenyl magnesium bromide reacts with methanol to give

A

a mixture of anisole and Mg(OH)Br

B

a mixture of benzene and Mg(OMe)Br

C

a mixture of toluene and Mg(OH)Br

D

a mixture of phenol and Mg(Me)Br

Question 163: Palette 163/170

JEE Mains 2006 MCQ

Among the following the one that gives positives iodoform test upon reaction with ${I_2}$ and $NaOH$ is

A

B

$PhCHOHC{H_3}$

C

$C{H_3}C{H_2}CH\left( {OH} \right)C{H_2}C{H_3}$

D

${C_6}{H_5}C{H_2}C{H_2}OH$

Question 164: Palette 164/170

JEE Mains 2006 MCQ

The electrophile involved in the above reaction is

A

B

C

D

Question 165: Palette 165/170

JEE Mains 2005 MCQ

The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is

A

Acidic permanganate

B

Acidic dichromate

C

Chromic anhydride in glacial acetic acid

D

Pyridinium chloro – chromate

Question 166: Palette 166/170

JEE Mains 2005 MCQ

Acid catalyzed hydration of alkenes except ethene leads to the formation of

A

primary alcohol

B

secondary or tertiary alcohol

C

mixture of primary and secondary alcohols

D

mixture of secondary and tertiary alcohols

Question 167: Palette 167/170

JEE Mains 2004 MCQ

Acetyl bromide reacts with excess of CH₃MgI followed by treatment with a saturated solution of NH₄Cl given

A

acetone

B

acetyl iodide

C

2- methyl -2- propanol

D

acetamide

Question 168: Palette 168/170

JEE Mains 2004 MCQ

Among the following compounds which can be dehydrated very easily is

A

B

C

D

Question 169: Palette 169/170

JEE Mains 2003 MCQ

An ethar is more volatile than an alcohol having the same molecular formula. This is due to

A

alcohols having resonance structures

B

inter-molecular hydrogen bonding in ethers

C

inter-molecular hydrogen bonding in alcohols

D

dipole characters of ethers

Question 170: Palette 170/170

JEE Mains 2003 MCQ

During dehydration of alcohols to alkenes by heating with conc. H₂SO₄ the initiation step is

A

formation of carbocation

B

elimination of water

C

formation of an ester

D

protonation of alcohol molecule