Question
What is the dominant intermolecular force that must be overcome in converting liquid to a gas?
Hydrogen bonding
Dipole-dipole interaction
Covalent bonds
London dispersion force
Methanol () molecules are held together primarily by intermolecular hydrogen bonds due to the presence of a highly electronegative oxygen atom covalently bonded to a hydrogen atom. During the phase transition from liquid to gas (vaporization), the thermal energy supplied is used to overcome these strong intermolecular hydrogen bonds. Although dipole-dipole interactions and London dispersion forces are also present, hydrogen bonding is the dominant and strongest intermolecular force. Covalent bonds are intramolecular forces and remain intact during physical phase changes like vaporization.
This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Chemical Bonding and Molecular Structure. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Chemical Bonding and Molecular Structure Questions
Which of the following species has a linear shape?
Which of the following is a paramagnetic compound?
A molecule having the maximum dipole moment among the following is -
Which orbital does the additional electron occupy when $O_{2}$ is converted to the $O_{2}^{-}$ ion?
Which of the following pairs share both isoelectronicity and isostructural characteristics? $\text{NO}_3^-$, $\text{CO}_3^{2-}$, $\text{ClO}_3^-$, $\text{SO}_3$
A paramagnetic molecule among the following is:
Consider the given compound: In the given options, the following for the above compound are, respectively: (i) $sp^{2}$ hybridised carbon atoms and (ii) $\pi$ bonds.
An isostructural compound with $XeF_2$ among the following is:
Why 32,000+ students choose TopperSquare
15,000+ Chapter MCQs
Physics, Chemistry, Biology — chapter-wise, topic-wise practice
AI Performance Analytics
Know your weak topics. Get a personalised study plan.
Full NEET Mock Tests
180 questions, timed, with detailed score analysis
PYQ Sets 2010–2024
15 years of past papers with solved explanations
No credit card · 30-second signup · Free forever plan included
This neet chemistry practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice chemistry sets →
Sign in to save your score, view detailed analytics, and bookmark tough questions for revision.
Sign In / Join FreeChapter-wise practice sets
Identify weak areas instantly
Step-by-step logic for every question