IUPAC Nomenclature — JEE Previous Year Questions

Every IUPAC Nomenclature question asked in JEE Main and JEE Advanced across the last 186 papers — 40 questions, each with its correct answer. Free to read, no account needed.

Questions

Papers it appeared in

37/186

Appearance rate

20%

All 40 IUPAC Nomenclature questions

Most recent papers first.

Q1·ChemistrySingle correctJEE Main 2026

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

(A) $-\mathrm{CONH_{2}},\ >\mathrm{C}=\mathrm{O},\ -\mathrm{CHO},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$
(B) $-\mathrm{CONH_{2}},\ -\mathrm{COOCH_{3}},\ -\mathrm{CHO},\ -\mathrm{NH_{2}},\ -\mathrm{OH}$
(C) $-\mathrm{CONH_{2}},\ -\mathrm{CHO},\ >\mathrm{C}=\mathrm{O},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$
(D) $-\mathrm{CONH_{2}},\ -\mathrm{CHO},\ -\mathrm{CN},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$

Q2·ChemistrySingle correctJEE Main 2026

The IUPAC name of the following comopound is :

(A)n-propyl-2-bromo-5-methylheptanoate
(B)2-bromo-5-methylhexylpropanoate
(C)2-bromo-5-methylpropanoate
(D)n-propyl-1-bromo-4-methylhexanoate

Q3·ChemistrySingle correctJEE Main 2025

What is the correct IUPAC name of the following compound?

(A)4-Ethyl-1-hydroxycyclopent-2-ene
(B)1-Ethyl-3-hydroxycyclopent-2-ene
(C)1-Ethylcyclopent-2-en-3-ol
(D)4-Ethylcyclopent-2-en-1-ol

Q4·ChemistrySingle correctJEE Main 2025

Which of the following is the correct IUPAC name of the given organic compound (X) shown in the figure?

(A)2-Bromo-2-methylbut-2-ene
(B)3-Bromo-3-methylprop-2-ene
(C)1-Bromo-2-methylbut-2-ene
(D)4-Bromo-3-methylbut-2-ene

Q5·ChemistrySingle correctJEE Main 2025

Consider the following molecule (X). The structure of X is:

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q6·ChemistrySingle correctJEE Main 2025

The IUPAC name of the following compound is:

(A)4-Hydroxyhept-1-en-6-yne
(B)4-Hydroxyhept-6-en-1-yne
(C)Hept-6-en-1-yn-4-ol
(D)Hept-1-en-6-yn-4-ol

Q7·ChemistrySingle correctJEE Main 2025

What is the correct IUPAC name of the compound given below?

(A)3-Bromo-2-hydroxy-5-nitrobenzoic acid
(B)3-Bromo-4-hydroxy-1-nitrobenzoic acid
(C)2-Hydroxy-3-bromo-5-nitrobenzoic acid
(D)5-Nitro-3-bromo-2-hydroxybenzoic acid

Q8·ChemistrySingle correctJEE Main 2025

In 3,3-dimethylhex-1-ene-4-yne, there are ______

sp^3

, ______

sp^2

and ______

sp

hybridized carbon atoms respectively:

(A)4, 2, 2
(B)3, 3, 2
(C)2, 4, 2
(D)2, 2, 4

Q9·ChemistrySingle correctJEE Main 2025

Match List-I (Structure) with List-II (IUPAC Name). Choose the correct answer from the options given below:

List-I (Structure)	List-II (IUPAC Name)
A.see figure	I.4-Methylpent-1-ene
B.see figure	II.3-Ethyl-5-methylheptane
C.see figure	III.4,4-Dimethylheptane
D.see figure	IV.2-Methyl-1,3-pentadiene

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

Q10·ChemistrySingle correctJEE Main 2025

Total number of sigma (

\sigma

) ______ and pi (

\pi

) ______ bonds respectively present in the hex-1-en-4-yne are:

(A)13 and 3
(B)11 and 3
(C)13 and 5
(D)14 and 3

Q11·ChemistryIntegerJEE Main 2025

The sum of sigma (

\sigma

) and pi (

\pi

) bonds in Hex-1,3-dien-5-yne is ______.

Q12·ChemistryIntegerJEE Main 2025

The hydrocarbon (X) with molar mass 80 g mol

^{-1}

and 90% carbon has __________ degree of unsaturation.

Q13·ChemistrySingle correctJEE Main 2025

In the given structure

CH_3\text{-}CO\text{-}CH{=}CH\text{-}CH_2\text{-}C{\equiv}C\text{-}CH{=}CH\text{-}C{\equiv}N

, the number of sp and sp

^2

hybridized carbon atoms present respectively are :

(A)3 and 6
(B)3 and 5
(C)4 and 6
(D)4 and 5

Q14·ChemistrySingle correctJEE Main 2025

The IUPAC name of the compound shown is:

(A)1,2-Carboxy-5-methoxycarbonylhexane
(B)Methyl-6-carboxy-2,5-dimethylhexanoate
(C)Methyl-5-carboxy-2-methylhexanoate
(D)6-Methoxycarbonyl-2,5-dimethylhexanoic acid

Q15·ChemistrySingle correctJEE Main 2024

Given below are two statements: Statement I: IUPAC name of Compound A (shown) is 4-chloro-1,3-dinitrobenzene. Statement II: IUPAC name of Compound B (shown) is 4-ethyl-2-methylaniline. 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)Statement I is correct but Statement II is incorrect
(D)Both Statement I and Statement II are incorrect

Q16·ChemistrySingle correctJEE Main 2024

IUPAC name of the following hydrocarbon (X) is:

\text{CH}_3\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_2\text{-CH(CH}_3)\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_3

(A)2-Ethyl-3,6-dimethylheptane
(B)2-Ethyl-2,6-diethylheptane
(C)2,5,6-Trimethyloctane
(D)3,4,7-Trimethyloctane

Q17·ChemistrySingle correctJEE Main 2024

The functional group present in sulphonic acid is:

(A) $-SO_4H$
(B) $-SO_3H$
(C) $-S(=O)-OH$
(D) $-SO_2-$

Q18·ChemistrySingle correctJEE Main 2024

The correct IUPAC nomenclature for the compound shown below is:

(A)2-carboxy-4-hydroxyhept-6-enal
(B)2-carboxy-4-hydroxyhept-7-enal
(C)2-formyl-4-hydroxyhept-6-enoic acid
(D)2-formyl-4-hydroxyhept-7-enoic acid

Q19·ChemistryNumericalJEE Main 2024

The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ______.

Q20·ChemistrySingle correctJEE Main 2024

Identify structure of 2,3-dibromo-1-phenylpentane (from the structures shown in the figure).

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q21·ChemistrySingle correctJEE Main 2024

Given below are two statements: Statement I : IUPAC name of

HO-CH_2-(CH_2)_3-CH_2-COCH_3

is 7-hydroxyheptan-2-one. Statement II : 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light of the above statements, choose the most appropriate answer from the options given below:

(A)Statement I is correct but Statement II is incorrect.
(B)Both Statement I and Statement II are incorrect.
(C)Both Statement I and Statement II are correct.
(D)Statement I is incorrect but Statement II is correct.

Q22·ChemistrySingle correctJEE Main 2024

Structure of 4-Methylpent-2-enal is:

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q23·ChemistrySingle correctJEE Main 2024

IUPAC name of following compound is:

CH_3-CH(NH_2)-CH_2-CN

(A)2-Aminopentanenitrile
(B)2-Aminobutanenitrile
(C)3-Aminobutanenitrile
(D)3-Aminopropanenitrile

Q24·ChemistrySingle correctJEE Main 2024

According to IUPAC system, the compound is named as:

(A)Cyclohex-1-en-2-ol
(B)1-Hydroxyhex-2-ene
(C)Cyclohex-1-en-3-ol
(D)Cyclohex-2-en-1-ol

Q25·ChemistrySingle correctJEE Main 2024

The bond line formula of

HOCH(CN)_2

is :

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q26·ChemistrySingle correctJEE Main 2023

The correct IUPAC nomenclature for the following compound is

(A)5-Formyl-2-methylhexanoic acid
(B)2-Methyl-5-oxohexanoic acid
(C)2-Formyl-5-methylhexan-6-oic acid
(D)5-Methyl-2-oxohexan-6-oic acid

Q27·ChemistrySingle correctJEE Main 2022

Correct structure of γ-methylcyclohexane carbaldehyde is :

(A)(A)
(B)(B)
(C)(C)
(D)(D)

Q28·ChemistrySingle correctJEE Main 2022

Match List-I with List-II. Choose the correct answer from the options given below :

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

Q29·ChemistrySingle correctJEE Main 2022

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is :

(A)—COOH > — $CONH_{2}$ > —COCl > —CHO
(B)— $SO_{3}H$ > —COCl > — $CONH_{2}$ > —CN
(C)—COOR > —COCl > — $NH_{2}$ > >C = o
(D)—COOH > —COOR > — $CONH_{2}$ > —COCl

Q30·ChemistryNumericalJEE Main 2022

The number of

sp^{3}

hybridised carbons in an acyclic neutral compound with molecular formula

C_{4}H_{5}N

is :

Q31·ChemistrySingle correctJEE Main 2022

The correct IUPAC name of the following compound is :

(A)4-methyl-2-nitro-5-oxohept-3-enal
(B)4-methyl-5-oxo-2-nitrohept-3-enal
(C)4-methyl-6-nitro-3-oxohept-4-enal
(D)6-formyl-4-methyl-2-nitrohex-3-enal

Q32·ChemistrySingle correctJEE Main 2021

Choose the correct name for compound given below :

(A)(4E)-5-Bromo-hex-4-en-2-yne
(B)(2E)-2-Bromo-hex-4-yn-2-ene
(C)(2E)-2-Bromo-hex-2-en-4-yne
(D)(4E)-5-Bromo-hex-2-en-4-yne

Q33·ChemistryNumericalJEE Main 2021

The number of sigma bonds in

H_3C-C(H)=CH-C\equiv C-H

is ____________________.

Q34·ChemistryNumericalJEE Main 2021

The total number of C–C sigma bond/s in mesityl oxide (C

_{6}

_{10}

O) is____. (Round off to the Nearest Integer).

Q35·ChemistrySingle correctJEE Advanced 2020

Which one of the following structures has the IUPAC name 3-ethynyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid ?

(A)(A)
(B)(B)
(C)(C)
(D)(D)

Q36·ChemistrySingle correctJEE Main 2020

The IUPAC name of the following compound is [structure shown]

(A)2-nitrogen-4-hydroxymethyl-5-amine benzaldehyde.
(B)3-amino-4-hydroxymethyl 1-5-nitrobvenzaldehyde
(C)5-amino-4hydroxymethyl-2-nitrobenzaldehyde
(D)4-amino-2formyl-5hydroxymethyl nitrobenzene

Q37·ChemistrySingle correctJEE Main 2020

The IUPAC name of the following compound is:

(A)4–Bromo–5–methylcyclopentanoic acid
(B)4–Bromo–2–methylcyclopentane carboxylic acid
(C)3–Bromo–5– methylcyclopentane carboxylic acid
(D)5–Bromo–3–methylcyclopentanoic acid

Q38·ChemistrySingle correctJEE Main 2019

The IUPAC name of the following compound is :

(A)3, 5-dimethyl-4-propylhept-1-en-6-yne
(B)3-methyl-4-(1-methylprop-2-ynyl)-1-heptene
(C)3-methyl-4-(3-methylprop-1-enyl)-1-heptyne
(D)3, 5-dimethyl-4-propylhept-6-en-1-yne

Q39·ChemistrySingle correctJEE Main 2019

The correct IUPAC name of the following compound is

(A)5-chloro-4-methyl-1-nitrobenzene
(B)2-methyl-5-nitro-1-chlorobenzene
(C)3-chloro-4-methyl-1-nitrobenzene
(D)2-chloro-1-methyl-4-nitrobenzene

Q40·ChemistrySingle correctJEE Main 2019

The IUPAC name of the following compound is:

(A)3-Hydroxy – 4 – methylpentaonic acid
(B)4 – Methyl – 3 – hydroxypentanoic acid
(C)2 – Methyl – 3 – hydroxylpentan-5-oic acid
(D)4, 4 – Dimethyl – 3 – hydroxybutanoic acid

IUPAC Nomenclature — frequently asked

How many questions from IUPAC Nomenclature appear in JEE?

IUPAC Nomenclature has appeared in 37 of the last 186 JEE Main and JEE Advanced papers — about 20% of them — contributing 40 questions in total across those papers.

Is IUPAC Nomenclature an important chapter for JEE?

Judged by how often it is actually tested, it appears in roughly 20% of papers. Chapters above about 50% are effectively guaranteed to show up every session, so they repay thorough preparation; lower-frequency chapters are better treated as targeted revision.

Where do these IUPAC Nomenclature questions come from?

Every question is from an official JEE Main or JEE Advanced paper, transcribed from the original paper and tagged to this chapter. Answers follow the official answer key.

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All 40 IUPAC Nomenclature questions

Most recent papers first.

Q1·ChemistrySingle correctJEE Main 2026

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

(A) $-\mathrm{CONH_{2}},\ >\mathrm{C}=\mathrm{O},\ -\mathrm{CHO},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$
(B) $-\mathrm{CONH_{2}},\ -\mathrm{COOCH_{3}},\ -\mathrm{CHO},\ -\mathrm{NH_{2}},\ -\mathrm{OH}$
(C) $-\mathrm{CONH_{2}},\ -\mathrm{CHO},\ >\mathrm{C}=\mathrm{O},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$
(D) $-\mathrm{CONH_{2}},\ -\mathrm{CHO},\ -\mathrm{CN},\ -\mathrm{NH_{2}},\ -\mathrm{C}\equiv\mathrm{C}-$

Q2·ChemistrySingle correctJEE Main 2026

The IUPAC name of the following comopound is :

(A)n-propyl-2-bromo-5-methylheptanoate
(B)2-bromo-5-methylhexylpropanoate
(C)2-bromo-5-methylpropanoate
(D)n-propyl-1-bromo-4-methylhexanoate

Q3·ChemistrySingle correctJEE Main 2025

What is the correct IUPAC name of the following compound?

(A)4-Ethyl-1-hydroxycyclopent-2-ene
(B)1-Ethyl-3-hydroxycyclopent-2-ene
(C)1-Ethylcyclopent-2-en-3-ol
(D)4-Ethylcyclopent-2-en-1-ol

Q4·ChemistrySingle correctJEE Main 2025

Which of the following is the correct IUPAC name of the given organic compound (X) shown in the figure?

(A)2-Bromo-2-methylbut-2-ene
(B)3-Bromo-3-methylprop-2-ene
(C)1-Bromo-2-methylbut-2-ene
(D)4-Bromo-3-methylbut-2-ene

Q5·ChemistrySingle correctJEE Main 2025

Consider the following molecule (X). The structure of X is:

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q6·ChemistrySingle correctJEE Main 2025

The IUPAC name of the following compound is:

(A)4-Hydroxyhept-1-en-6-yne
(B)4-Hydroxyhept-6-en-1-yne
(C)Hept-6-en-1-yn-4-ol
(D)Hept-1-en-6-yn-4-ol

Q7·ChemistrySingle correctJEE Main 2025

What is the correct IUPAC name of the compound given below?

(A)3-Bromo-2-hydroxy-5-nitrobenzoic acid
(B)3-Bromo-4-hydroxy-1-nitrobenzoic acid
(C)2-Hydroxy-3-bromo-5-nitrobenzoic acid
(D)5-Nitro-3-bromo-2-hydroxybenzoic acid

Q8·ChemistrySingle correctJEE Main 2025

In 3,3-dimethylhex-1-ene-4-yne, there are ______

sp^3

, ______

sp^2

and ______

sp

hybridized carbon atoms respectively:

(A)4, 2, 2
(B)3, 3, 2
(C)2, 4, 2
(D)2, 2, 4

Q9·ChemistrySingle correctJEE Main 2025

Match List-I (Structure) with List-II (IUPAC Name). Choose the correct answer from the options given below:

List-I (Structure)	List-II (IUPAC Name)
A.see figure	I.4-Methylpent-1-ene
B.see figure	II.3-Ethyl-5-methylheptane
C.see figure	III.4,4-Dimethylheptane
D.see figure	IV.2-Methyl-1,3-pentadiene

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

Q10·ChemistrySingle correctJEE Main 2025

Total number of sigma (

\sigma

) ______ and pi (

\pi

) ______ bonds respectively present in the hex-1-en-4-yne are:

(A)13 and 3
(B)11 and 3
(C)13 and 5
(D)14 and 3

Q11·ChemistryIntegerJEE Main 2025

The sum of sigma (

\sigma

) and pi (

\pi

) bonds in Hex-1,3-dien-5-yne is ______.

Q12·ChemistryIntegerJEE Main 2025

The hydrocarbon (X) with molar mass 80 g mol

^{-1}

and 90% carbon has __________ degree of unsaturation.

Q13·ChemistrySingle correctJEE Main 2025

In the given structure

CH_3\text{-}CO\text{-}CH{=}CH\text{-}CH_2\text{-}C{\equiv}C\text{-}CH{=}CH\text{-}C{\equiv}N

, the number of sp and sp

^2

hybridized carbon atoms present respectively are :

(A)3 and 6
(B)3 and 5
(C)4 and 6
(D)4 and 5

Q14·ChemistrySingle correctJEE Main 2025

The IUPAC name of the compound shown is:

(A)1,2-Carboxy-5-methoxycarbonylhexane
(B)Methyl-6-carboxy-2,5-dimethylhexanoate
(C)Methyl-5-carboxy-2-methylhexanoate
(D)6-Methoxycarbonyl-2,5-dimethylhexanoic acid

Q15·ChemistrySingle correctJEE Main 2024

(A)Both Statement I and Statement II are correct
(B)Statement I is incorrect but Statement II is correct
(C)Statement I is correct but Statement II is incorrect
(D)Both Statement I and Statement II are incorrect

Q16·ChemistrySingle correctJEE Main 2024

IUPAC name of the following hydrocarbon (X) is:

\text{CH}_3\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_2\text{-CH(CH}_3)\text{-CH(CH}_3)\text{-CH}_2\text{-CH}_3

(A)2-Ethyl-3,6-dimethylheptane
(B)2-Ethyl-2,6-diethylheptane
(C)2,5,6-Trimethyloctane
(D)3,4,7-Trimethyloctane

Q17·ChemistrySingle correctJEE Main 2024

The functional group present in sulphonic acid is:

(A) $-SO_4H$
(B) $-SO_3H$
(C) $-S(=O)-OH$
(D) $-SO_2-$

Q18·ChemistrySingle correctJEE Main 2024

The correct IUPAC nomenclature for the compound shown below is:

(A)2-carboxy-4-hydroxyhept-6-enal
(B)2-carboxy-4-hydroxyhept-7-enal
(C)2-formyl-4-hydroxyhept-6-enoic acid
(D)2-formyl-4-hydroxyhept-7-enoic acid

Q19·ChemistryNumericalJEE Main 2024

The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ______.

Q20·ChemistrySingle correctJEE Main 2024

Identify structure of 2,3-dibromo-1-phenylpentane (from the structures shown in the figure).

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q21·ChemistrySingle correctJEE Main 2024

Given below are two statements: Statement I : IUPAC name of

HO-CH_2-(CH_2)_3-CH_2-COCH_3

(A)Statement I is correct but Statement II is incorrect.
(B)Both Statement I and Statement II are incorrect.
(C)Both Statement I and Statement II are correct.
(D)Statement I is incorrect but Statement II is correct.

Q22·ChemistrySingle correctJEE Main 2024

Structure of 4-Methylpent-2-enal is:

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q23·ChemistrySingle correctJEE Main 2024

IUPAC name of following compound is:

CH_3-CH(NH_2)-CH_2-CN

(A)2-Aminopentanenitrile
(B)2-Aminobutanenitrile
(C)3-Aminobutanenitrile
(D)3-Aminopropanenitrile

Q24·ChemistrySingle correctJEE Main 2024

According to IUPAC system, the compound is named as:

(A)Cyclohex-1-en-2-ol
(B)1-Hydroxyhex-2-ene
(C)Cyclohex-1-en-3-ol
(D)Cyclohex-2-en-1-ol

Q25·ChemistrySingle correctJEE Main 2024

The bond line formula of

HOCH(CN)_2

is :

(A)(1)
(B)(2)
(C)(3)
(D)(4)

Q26·ChemistrySingle correctJEE Main 2023

The correct IUPAC nomenclature for the following compound is

(A)5-Formyl-2-methylhexanoic acid
(B)2-Methyl-5-oxohexanoic acid
(C)2-Formyl-5-methylhexan-6-oic acid
(D)5-Methyl-2-oxohexan-6-oic acid

Q27·ChemistrySingle correctJEE Main 2022

Correct structure of γ-methylcyclohexane carbaldehyde is :

(A)(A)
(B)(B)
(C)(C)
(D)(D)

Q28·ChemistrySingle correctJEE Main 2022

Match List-I with List-II. Choose the correct answer from the options given below :

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

Q29·ChemistrySingle correctJEE Main 2022

The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is :

(A)—COOH > — $CONH_{2}$ > —COCl > —CHO
(B)— $SO_{3}H$ > —COCl > — $CONH_{2}$ > —CN
(C)—COOR > —COCl > — $NH_{2}$ > >C = o
(D)—COOH > —COOR > — $CONH_{2}$ > —COCl

Q30·ChemistryNumericalJEE Main 2022

The number of

sp^{3}

hybridised carbons in an acyclic neutral compound with molecular formula

C_{4}H_{5}N

is :

Q31·ChemistrySingle correctJEE Main 2022

The correct IUPAC name of the following compound is :

(A)4-methyl-2-nitro-5-oxohept-3-enal
(B)4-methyl-5-oxo-2-nitrohept-3-enal
(C)4-methyl-6-nitro-3-oxohept-4-enal
(D)6-formyl-4-methyl-2-nitrohex-3-enal

Q32·ChemistrySingle correctJEE Main 2021

Choose the correct name for compound given below :

(A)(4E)-5-Bromo-hex-4-en-2-yne
(B)(2E)-2-Bromo-hex-4-yn-2-ene
(C)(2E)-2-Bromo-hex-2-en-4-yne
(D)(4E)-5-Bromo-hex-2-en-4-yne

Q33·ChemistryNumericalJEE Main 2021

The number of sigma bonds in

H_3C-C(H)=CH-C\equiv C-H

is ____________________.

Q34·ChemistryNumericalJEE Main 2021

The total number of C–C sigma bond/s in mesityl oxide (C

_{6}

_{10}

O) is____. (Round off to the Nearest Integer).

Q35·ChemistrySingle correctJEE Advanced 2020

Which one of the following structures has the IUPAC name 3-ethynyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid ?

(A)(A)
(B)(B)
(C)(C)
(D)(D)

Q36·ChemistrySingle correctJEE Main 2020

The IUPAC name of the following compound is [structure shown]

(A)2-nitrogen-4-hydroxymethyl-5-amine benzaldehyde.
(B)3-amino-4-hydroxymethyl 1-5-nitrobvenzaldehyde
(C)5-amino-4hydroxymethyl-2-nitrobenzaldehyde
(D)4-amino-2formyl-5hydroxymethyl nitrobenzene

Q37·ChemistrySingle correctJEE Main 2020

The IUPAC name of the following compound is:

(A)4–Bromo–5–methylcyclopentanoic acid
(B)4–Bromo–2–methylcyclopentane carboxylic acid
(C)3–Bromo–5– methylcyclopentane carboxylic acid
(D)5–Bromo–3–methylcyclopentanoic acid

Q38·ChemistrySingle correctJEE Main 2019

The IUPAC name of the following compound is :

(A)3, 5-dimethyl-4-propylhept-1-en-6-yne
(B)3-methyl-4-(1-methylprop-2-ynyl)-1-heptene
(C)3-methyl-4-(3-methylprop-1-enyl)-1-heptyne
(D)3, 5-dimethyl-4-propylhept-6-en-1-yne

Q39·ChemistrySingle correctJEE Main 2019

The correct IUPAC name of the following compound is

(A)5-chloro-4-methyl-1-nitrobenzene
(B)2-methyl-5-nitro-1-chlorobenzene
(C)3-chloro-4-methyl-1-nitrobenzene
(D)2-chloro-1-methyl-4-nitrobenzene

Q40·ChemistrySingle correctJEE Main 2019

The IUPAC name of the following compound is:

(A)3-Hydroxy – 4 – methylpentaonic acid
(B)4 – Methyl – 3 – hydroxypentanoic acid
(C)2 – Methyl – 3 – hydroxylpentan-5-oic acid
(D)4, 4 – Dimethyl – 3 – hydroxybutanoic acid

IUPAC Nomenclature — frequently asked

How many questions from IUPAC Nomenclature appear in JEE?

IUPAC Nomenclature has appeared in 37 of the last 186 JEE Main and JEE Advanced papers — about 20% of them — contributing 40 questions in total across those papers.

Is IUPAC Nomenclature an important chapter for JEE?

Where do these IUPAC Nomenclature questions come from?

Every question is from an official JEE Main or JEE Advanced paper, transcribed from the original paper and tagged to this chapter. Answers follow the official answer key.