1
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate Gibbs energy change for a reaction having $\Delta \mathrm{H}=31400 \mathrm{~J}, \Delta \mathrm{~S}=32 \mathrm{~J} \mathrm{~K}^{-1}$ at $1000^{\circ} \mathrm{C}$ ?

A
$-$4668 J
B
$-$9336 J
C
$-$4073 J
D
$-2334 \mathrm{~J}$
2
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If 100 L gas is enclosed in a cylinder, absorbs 302.6 J of heat and expands to 200 L against constant external pressure of 2 atm . Calculate internal energy change of the gas.

A
200 J
B
- 19962 J
C
-20665 J
D
-21665 J
3
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is true for the value of $\Delta \mathrm{H}-\Delta \mathrm{U}$ at constant volume?

A
R
B
Zero
C
$\frac{3}{2} R$
D
$\frac{5}{2} R$
4
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate enthalpy change for following reaction.

$$\mathrm{H}_2 \mathrm{C}=\mathrm{CH}_{2(\mathrm{~g})}+\mathrm{H}_{2(\mathrm{~g})} \longrightarrow \mathrm{H}_3 \mathrm{C}-\mathrm{CH}_{3(\mathrm{~g})}$$

[The bond energy of $\mathrm{C}-\mathrm{H}, \mathrm{C}-\mathrm{C}, \mathrm{C}=\mathrm{C}$ and $\mathrm{H}-\mathrm{H}$ is $414,347,615$ and 435 kJ respectively]

A
125 kJ
B
$-$125 kJ
C
250 kJ
D
$-250 \mathrm{~kJ}$
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