Given below are two statements: Statement (I): is more polar than . Statement (II): Boiling point of is lower than the ortho-isomer, but it is more polar than the meta-isomer. In the light of the above statements, choose the most appropriate answer from the options given below:

Let's analyze the visual structures alongside their scientific orientations: - Statement (I) compares 1,2-dichlorobenzene and 1,2-dibromobenzene. Chlorine has a higher electronegativity than bromine, creating a larger bond dipole. The vacant d-orbital interactions do not invert this baseline dipole trend. Thus, 1,2-dichlorobenzene is more polar, making Statement I correct. - Statement (II) evaluates dihalobenzene isomers. For the para-isomer, individual bond dipoles are oriented at 180, cancelling out completely: Since mumeta > 0, the para-isomer is *less* polar than the meta-isomer. This directly falsifies Statement II. The geometric configurations map out as follows: Hence, Statement I is correct, but Statement II is incorrect. Dipole tracking rule: Para-substituted benzenes with identical groups possess a structural center of inversion, guaranteeing a net dipole moment of exactly zero (mu = 0). They can never be more polar than any asymmetric ortho or meta structural isomer. Class 12 Chemistry: Haloalkanes and Haloarenes

Given below are two statements: Statement (I): is more polar than . Statement (II): Boiling point of is lower than the ortho-isomer, but it is more polar than the meta-isomer. In the light of the abov

Let's analyze the visual structures alongside their scientific orientations: - Statement (I) compares 1,2-dichlorobenzene and 1,2-dibromobenzene. Chlorine has a higher electronegativity than bromine, creating a larger bond dipole. The vacant d-orbital interactions do not invert this baseline dipole trend. Thus, 1,2-dichlorobenzene is more polar, making Statement I correct. - Statement (II) evaluates dihalobenzene isomers. For the para-isomer, individual bond dipoles are oriented at 180, cancelli

Given below are two statements: Statement (I): is more polar than . Statement (II): Boiling point of is lower than the ortho-isomer, but it is more polar than the meta-isomer. In the light of the above statements, choose the most appropriate answer from the options given below:

Let's analyze the visual structures alongside their scientific orientations: - Statement (I) compares 1,2-dichlorobenzene and 1,2-dibromobenzene. Chlorine has a higher electronegativity than bromine, creating a larger bond dipole. The vacant d-orbital interactions do not invert this baseline dipole trend. Thus, 1,2-dichlorobenzene is more polar, making Statement I correct. - Statement (II) evaluates dihalobenzene isomers. For the para-isomer, individual bond dipoles are oriented at 180, cancelling out completely: Since mumeta > 0, the para-isomer is *less* polar than the meta-isomer. This directly falsifies Statement II. The geometric configurations map out as follows: Hence, Statement I is correct, but Statement II is incorrect. Dipole tracking rule: Para-substituted benzenes with identical groups possess a structural center of inversion, guaranteeing a net dipole moment of exactly zero (mu = 0). They can never be more polar than any asymmetric ortho or meta structural isomer. Class 12 Chemistry: Haloalkanes and Haloarenes

Given below are two statements: Statement (I): is more polar than . Statement (II): Boiling point of is lower than the ortho-isomer, but it is more polar than the meta-isomer. In the light of the abov

Let's analyze the visual structures alongside their scientific orientations: - Statement (I) compares 1,2-dichlorobenzene and 1,2-dibromobenzene. Chlorine has a higher electronegativity than bromine, creating a larger bond dipole. The vacant d-orbital interactions do not invert this baseline dipole trend. Thus, 1,2-dichlorobenzene is more polar, making Statement I correct. - Statement (II) evaluates dihalobenzene isomers. For the para-isomer, individual bond dipoles are oriented at 180, cancelli

Given below are two statements: Statement (I): is more polar than . Statement (II): Boiling point of is lower than the…

Year	2026	2025	2024	Total
Questions	11	16	13	40

Year

2026

2025

2024

Total

Questions

Solution & Explanation

Related Formula

μnet = \sqrt(μ₁² + μ₂² + 2μ₁μ₂ θ)

Boiling point \propto Dipole-dipole interactions + Van der Waals forces

Core Logic

Let's analyze the visual structures alongside their scientific orientations:

Statement (I) compares 1,2-dichlorobenzene and 1,2-dibromobenzene. Chlorine has a higher electronegativity than bromine, creating a larger bond dipole. The vacant d-orbital interactions do not invert this baseline dipole trend. Thus, 1,2-dichlorobenzene is more polar, making Statement I correct.
Statement (II) evaluates dihalobenzene isomers. For the para-isomer, individual bond dipoles are oriented at $180°$ $180^{\circ}$, cancelling out completely:

μpara = 0

Since $μmeta > 0$ $\mu_{\text{meta}} > 0$, the para-isomer is less polar than the meta-isomer. This directly falsifies Statement II.

Step 1: Spatial Alignments

The geometric configurations map out as follows:

Physical Properties of Isomers vector diagram for Q42 - JEE Main 2025 Evening — The structural layouts show ortho and para halobenzene isomers (1,2-dichlorobenzene vs 1,2-dibromobenzene, and para-dibromobenzene).

Hence, Statement I is correct, but Statement II is incorrect.

Pattern Recognition

Dipole tracking rule: Para-substituted benzenes with identical groups possess a structural center of inversion, guaranteeing a net dipole moment of exactly zero ( $μ = 0$ $\mu = 0$). They can never be more polar than any asymmetric ortho or meta structural isomer.

Chapter Mix

Class 12 Chemistry: Haloalkanes and Haloarenes

More Haloalkanes and Haloarenes Previous-Year Questions — Page 8

Q74 jee_main_2024_30_jan_morning Classification

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

CH₂=CH-CH₂-Cl

is an example of allyl halide Reason (R): Allyl halides are the compounds in which the halogen atom is attached to

sp²

hybridised carbon atom. In the light of the two above statements, choose the most appropriate answer from the options given below:

A. $(A) is true but (R) is false$ $\text{(A) is true but (R) is false}$
B. $Both (A) and (R) are true but (R) is not the correct explanation of (A)$
C. $(A) is false but (R) is true$ $\text{(A) is false but (R) is true}$
D. $Both (A) and (R) are true and (R) is the correct explanation of (A)$