1
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate standard internal energy change for $\mathrm{OF}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})} \longrightarrow 2 \mathrm{HF}_{(\mathrm{g})}+\mathrm{O}_{2(\mathrm{~g})}$ at 300 K , if $\Delta_{\mathrm{f}} \mathrm{H}^{\circ}$ of $\mathrm{OF}_{2(\mathrm{~g})}, \mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$ and $\mathrm{HF}_{(\mathrm{g})}$ are 20, -250 and $-270 \quad \mathrm{~kJ} \mathrm{~mol}^{-1}$ respectively. $\left[\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right]$

A
$\mathrm{-307.50 ~kJ}$
B
$-342.48 \mathrm{~kJ}$
C
$-412.00 \mathrm{~kJ}$
D
$\mathrm{-214.48 ~kJ}$
2
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate internal energy change of a system if work done by the system is 8 J and heat supplied to it is 40 J .

A
$-48$ J
B
$-40$ J
C
32 J
D
24 J
3
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following equation relates temperature of a reaction with $\Delta \mathrm{H}^{\circ}$ and $\Delta \mathrm{S}^{\circ}$ at equilibrium?

A
$\Delta H^{\circ}=\frac{T}{\Delta S^{\circ}}$
B
$\Delta \mathrm{H}^{\circ}=\frac{\Delta \mathrm{S}^{\circ}}{\mathrm{T}}$
C
$\Delta \mathrm{H}^{\circ}=\mathrm{T} \Delta \mathrm{S}^{\circ}$
D
$\Delta \mathrm{H}^{\circ}=\frac{1}{\mathrm{~T} \Delta \mathrm{~S}^{\circ}}$
4
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The enthalpy of vaporisation of a liquid is $30 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and entropy of vaporisation is $75 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$. Calculate boiling point of liquid at 1 atm .

A
250 K
B
400 K
C
450 K
D
600 K
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