Chemistry · JEE

Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution Concepts for JEE

22+ syllabus-aligned questions available

Quick answer

Master Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution is a core JEE Main Chemistry subtopic under Chemical Thermodynamics. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

Understand the definition and scope of Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution in the JEE syllabus
Memorise key formulas and standard results linked to Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution
Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

Revise Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution with a one-page formula sheet before attempting mixed tests
After each practice set, log mistakes specific to Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution and reattempt after 48 hours

Common trap

Students often rush Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

Part of Chemical Thermodynamics in JEE Main Chemistry.

Free sample questions

Attempt 8 free MCQs for Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution. Unlock 14+ more with Pro.

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Q1ChemistryUnit 4: Chemical Thermodynamics

Which is a common standard for calibrating a bomb calorimeter in teaching laboratories?

Q2ChemistryUnit 4: Chemical Thermodynamics

\boldsymbol{C}_{\boldsymbol{g} \text {raphite}}+\boldsymbol{O}_{\mathbf{2}(\boldsymbol{g})} \rightarrow \boldsymbol{C} \boldsymbol{O}_{2(\boldsymbol{g})} ; \boldsymbol{\Delta} \boldsymbol{H}=

-393.5 k J, \Delta H

of the reaction cannot be:

Q3ChemistryUnit 4: Chemical Thermodynamics

If enthalpies of formation for

\boldsymbol{C}_{2} \boldsymbol{H}_{4}(\boldsymbol{g})

C O_{2}(g)

and

H_{2} O(l)

25^{\circ} \mathrm{C}

and 1 atm pressure be 52,-394 and -286

k J

mol

^{-1}

respectively, then the enthalpy of combustion of

C_{2} H_{4}(g)

will be:

Q4ChemistryUnit 4: Chemical Thermodynamics

When a solid is converted into a gas, directly by heating then this process is known as:

Q5ChemistryUnit 4: Chemical Thermodynamics

The compound with negative value of heat of formation is called:

Q6ChemistryUnit 4: Chemical Thermodynamics

Which among the following has the highest calorific value?

Q7ChemistryUnit 4: Chemical Thermodynamics

When fuel is added to the exhaust (burnt) gases in a jet engine combustion takes place. Some facts are mentioned here about this combustion. Pick the false one?

Q8ChemistryUnit 4: Chemical Thermodynamics

Which of the following equations corresponds to the definition of enthalpy of formation at

298 K ?

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Frequently asked questions

What concepts in Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution are essential for JEE?

Focus on core ideas across Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution. JEE tests application, not just memorisation.