JEE Main PYQs — General Organic Chemistry (GOC)

Consider the following compound (X): The most stable and least stable carbon radicals, respectively, produced by homolytic cleavage of corresponding C-H bond are:

Given below are two statements: Statement I: Hyperconjugation is not a permanent effect. Statement II: In general, greater the number of alkyl groups attached to a positively charged C-atom, greater…

The correct order of stability of following carbocations is:

The least acidic compound, among the following is:

In which pairs, the first ion is more stable than the second?

Which one of the carbocations from the following is most stable?

The most stable carbocation from the following is:

Match the LIST-I with LIST-II | LIST-I | LIST-II | |---|---| | A. Carbocation | I. Species that can supply a pair of electrons | | B. C-Free radical | II. Species that can receive a pair of electrons…

Total number of nucleophiles from the following is: NH3, PhSH, (H3C)2S, H2C=CH2, OH-, H3O+, (CH3)2CO, >=NCH3

Which among the following halides will generate the most stable carbocation in Nucleophilic substitution reaction?

The correct order of stability of following carbocations is:

Designate whether each of the following compounds is aromatic or not aromatic. Choose the correct designation:

The correct stability order of the following species/molecules is:

Given below are two statements: Statement (I): Cyclopentane and pent-1-ene are isomeric compounds. Statement (II): CH3CH2NH2 (ethylamine) and CH3NHCH3 (dimethylamine) are functional group isomers.…

Which one of the carbocations from the following is most stable?

Match the LIST-I with LIST-II | LIST-I | LIST-II | |---|---| | A. Carbocation | I. Species that can supply a pair of electrons. | | B. Free radical | II. Species that can receive a pair of electrons.…

Highest enol content will be shown by:

Given below are two statements: Statement-I: IUPAC name of HO-CH2-(CH2)3-CH2-COCH3 is 7-hydroxyheptan-2-one. Statement-II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light…

Match List-I with List-II. | List-I | List-II | |---|---| | (A) n-propanol and Isopropanol | (I) Metamerism | | (B) Methoxypropane and ethoxyethane | (II) Chain Isomerism | | (C) Propanone and…

Ascending acidity order of the following H atom is:

Which one of the following will show geometrical isomerism?

Total number of stereo isomers possible for the given structure is:

The order of relative stability of the contributing structure is:

According to IUPAC system, the compound is named as:

IUPAC name of the following compound is:

Statement-I: IUPAC name of Compound A is 4-chloro-1,3-dinitrobenzene Statement-II: IUPAC name of Compound B is 4-ethyl-2-methylaniline

Which of the following has highly acidic hydrogen?

The set of meta directing functional groups from the following sets is:

What will be the decreasing order of basic strength of the following conjugate bases? OH⁻, RO⁻, CH₃COO⁻, Cl⁻

Correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH₃CH₂COOH, CH₃COOH, CH₃CH₂CH₂COOH, HCOOH

Cyclohexene is 2cm type of an organic compound. (a) Benzenoid aromatic (b) Benzenoid non-aromatic (c) Acyclic (d) Alicyclic

IUPAC name of the following compound (P) is:

Structure of 4-Methylpent-2-enal is:

Which of the following is metamer of compound (X):

In the given compound, the number of 2 carbon atoms is:

IUPAC name of following hydrocarbon (X) is:

Correct carbocation stability order:

How many compounds show inductive, mesomeric AND hyperconjugation effects?

Correct stability order of resonance structures of CH₃-CH=CH-CHO:

Identify structure of 2,3-dibromo-1-phenylpentane.

The interaction between π bond and lone pair of electrons present on an adjacent atom is responsible for:

A species with carbon having sextet of electrons, acting as electrophile:

The functional group that shows negative resonance effect is:

Which among the following is incorrect statement?

Relative stability of contributing structures:

Bond line formula of HOCH(CN)2 is:

Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage (B) Heterolytic bond cleavage (C) Free radical formation (D) Primary free radical (E) Secondary free radical

Match List-I with List-II (Electronic effects):

The shape of carbocation is:

The incorrect statement regarding conformations of ethane is:

Which of the following molecule/species is most stable?

Correct order of stability of carbanion is:

Which of the following are aromatic?

Correct order of acidic strength for following compounds is:

Given statements about Tropolone: Statement-I: Tropolone is aromatic and has 8π electrons. Statement-II: π electrons of >C=O group in tropolone is involved in aromaticity. Choose the correct option:

Correct order of acidity of protons marked A-D:

Compound with highest dipole moment is:

Decreasing order of hydride affinity for carbocations:

The correct IUPAC nomenclature for the following compound is:

Resonance in carbonate ion (CO₃²⁻): Which is true?

Which will undergo deprotonation most readily in basic medium?

Increasing order of stability of resonance structures:

Correct statements for given reaction are: (A) Compound B is aromatic (B) Completion is very slow (C) A shows tautomerism (D) Bond lengths C-C in B are same

Most stable carbocation for the following is:

Pair with both compounds having net non-zero dipole moment is:

Which of the following conformations will be the most stable?

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

Most stable species:

Match List-I with List-II.

(C₇H₅O₂)₂ --hv--> [X] --> 2C₆H₅ + 2CO₂ Reaction intermediate X in the above reaction is:

Which of the following is not an example of benzenoid compound?

Correct order of nucleophilicity is:

Most stable carbocation:

Decreasing order of stability of following carbocations

Statements about Hyperconjugation: Statement-I: Hyperconjugation is permanent effect. Statement-II: Hyperconjugation in ethyl cation involves overlapping of C(sp²)-H(1s) bond with empty 2p orbital.

Compound with most acidic hydrogen:

Resonance stabilized carbocations among given species are:

Increasing order of basicity:

Which compound does NOT exhibit resonance?

Correct order of stability of above carbocations is:

Among the following structures, which resonating structure is least stable?

Experimentally reducing a functional group cannot be done by which one of the following reagents?

Staggered and eclipsed conformers of ethane are:

Mesityl oxide is a common name of:

Among the following, the aromatic compounds are:

Which one of the following compounds is non-aromatic?

In the following molecule:

Which one of the following compounds is not aromatic?

Which among the following is the strongest acid?

Which of the following is an aromatic compound?

The IUPAC name for the following compound is:

Increasing order of basicity:

Correct order of stability for alkoxides:

Which of the following compounds shows geometrical isomerism?

Among the following compounds, geometrical isomerism is exhibited by:

The correct order for acid strength of compounds: CH≡CH, CH3-C≡CH, CH2=CH2, CH3-C≡CH, CH2=CH2 is as follows:

The IUPAC name for the following compound is

The correct IUPAC name of the following compound is

Which of the following compounds will show the maximum 'enol' content?

The IUPAC name of the following compound is

What is the IUPAC name of the following compound?

Which of the following compound is not aromatic?

The absolute configuration of is