JEE Main 2026 · 8 Apr · Shift 2 · Chemistry Q66

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ChemistrySingle correct+4 / -1Question 66 of 75

Given below are two statements :

Statement I : Due to increase in van der Waals forces, the order of boiling points is $\ce{CH3CH2CH2I}>\ce{CH3CH2I}>\ce{CH3I}$ .

Statement II : As 1,4-dichlorobenzene is more symmetric, its melting point is higher than 1,2-dichlorobenzene, however its boiling point is lower than 1,2-dichlorobenzene.

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

Statement II's structures: 1,4-dichlorobenzene and 1,2-dichlorobenzene (drawn twice).

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: A

Statement I. Larger alkyl iodides have stronger van der Waals forces, so the boiling-point order is correct. True.

Statement II. p-Dichlorobenzene packs better in the crystal, so it has the higher melting point. o-Dichlorobenzene has a dipole moment, so it has the higher boiling point. True.

(A)

Topics:Haloarenes

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JEE Main 2026 · 8 Apr · Shift 2, Chemistry question 66