Chemistry · JEE

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

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Part of Chemical Thermodynamics in JEE Main Chemistry.

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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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