Enthalpy Change is an important topic in the Chemistry section in BITSAT exam. Practising this topic will increase your score overall and make your conceptual grip on BITSAT exam stronger.
This article gives you a full set of BITSAT PYQs for Enthalpy Change with explanations for effective preparation. Practice of BITSAT Chemistry PYQs including Enthalpy Change questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.
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BITSAT PYQs for Enthalpy Change with Solutions
1.
If the enthalpy of vaporization of water is $186.5 \,kJ \, mol^{-1}$, the entropy if its vaporization will be :- $0.5\,k \, JK^{-1} \, mol^{-1}$
- $1.0 \,k \, JK^{-1} \, mol^{-1}$
- $1.5 k \, JK^{-1} \, mol^{-1}$
- $2.0\,k \, JK^{-1} \, mol^{-1}$
2.
For the reaction $CO ( g )+\frac{1}{2} O _{2}( g ) \rightarrow CO _{2}( g )$ Which one of the statement is correct at constant $T$ and $P$ ?- $\Delta H =\Delta E$
- $\Delta H
- $\Delta H >\Delta E$
- $\Delta H$ is independent of physical state of the reactants
3.
The enthalpy of sublimation of aluminium is $330 \,kJ/mol$. Its $I^{st}, II^{nd}$ and $III^{rd}$ ionization enthalpies are $580, 1820$ and $2740 \,kJ$ respectively. How much heat has too be supplied (in $kJ$) to convert $13.5\, g$ of aluminium into $Al^{3+}$ ions and electrons at $298 \,k$- 5470
- 2735
- 4105
- 3765
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