JEE Main · 2020 · 08 Jan 2020 · Shift 1 · Chemical Bonding and Molecular Structure

The predominant intermolecular forces present in ethyl acetate, a liquid, are:

(A)hydrogen bonding and London dispersion
(B)Dipole-dipole and hydrogen bonding
(C)London dispersion, dipole-dipole and hydrogen bonding
(D)London dispersion and dipole-dipole✓ Correct

Answer: (D)

Solution

Ethyl acetate,

C H_{3} COO C_{2} H_{5}

, is polar because its carbonyl group creates a permanent dipole, yet it has no hydrogen attached directly to oxygen, nitrogen or fluorine, so it cannot act as a hydrogen-bond donor to itself. The forces holding its molecules together are therefore dipole-dipole attractions from the polarity together with the London dispersion forces present in every molecule.

JEE Main · 2020 · 08 Jan 2020 · Shift 1 · Single correct option

Practise more: all JEE Main PYQs on Chemical Bonding and Molecular Structure →

More JEE Main questions on Chemical Bonding and Molecular Structure

Given below are two statements:

Statement I: The number of species among $SF_{4}$ , $NH_{4}^{+}$ , $[NiCl_{4}]$ , $XeF_{4}$ , $[PtCl_{4}]^{2 -}$ , $SeF_{4}$ and $[Ni (CN)_{4}]^{2 -}$ , that have tetrahedral geometry …
JEE Main 2026View solution →
The formal changes on the atoms marked as (1) to (4) in the Lewis representation of $HnO_{3}$ molecule respectively are
JEE Main 2026View solution →
The correct increasing order of $C - H (A)$ , $C - O (B)$ , $C = O (C)$ and $C \equiv N (D)$ bonds in terms of covalent bond length is:
JEE Main 2026View solution →
Among $H_{2} S, H_{2} O, NF_{3}, NH_{3}$ and $CHCl_{3}$ , identify the molecule $(X)$ with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of the molecule …
JEE Main 2026View solution →
Identify the molecule $(X)$ with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among $HNO X_{3}$ , $H X_{2} SO X_{4}$ , $NF X_{3}$ and $O X_{3}$ . Choose the correct bond angle made by the central atom of the molecule (X).
JEE Main 2026View solution →
Given below are statements about some molecules/ions.

Identify the CORRECT statements.
A. The dipole moment value of $NF_{3}$ is higher than that of $NH_{3}$ .
B. The dipole moment value of $BeH_{2}$ is zero.
C. The bond order of …
JEE Main 2026View solution →