1
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A system performs mechanical work equal to 15 kJ and looses 2 kJ of heat to surrounding. What is the change in internal energy of a system?

A
$-$15 kJ
B
$-$17 kJ
C
13 kJ
D
19 kJ
2
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Find the constant external pressure required to expand a gas from 2.5 L to 4.5 L if amount of work done is 500 J at 298 K ?

A
1 bar
B
1.5 bar
C
2.0 bar
D
2.5 bar
3
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a particular reaction ' x ' kJ of heat is released by the system and ' y ' kJ of work done is done on the system. What is internal energy change?

A
$\mathrm{x}-\mathrm{ykJ}$
B
$\mathrm{y}-\mathrm{xkJ}$
C
$\mathrm{x+y k J}$
D
$\mathrm{xy} \mathrm{kJ}$
4
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the value of $\Delta G$ for the following reaction. $\mathrm{N}_2 \mathrm{O}_{4(\mathrm{~g})} \longrightarrow 2 \mathrm{NO}_{2(\mathrm{~g})}$ if $\Delta \mathrm{H}=57.44 \mathrm{~kJ}$ and $\Delta \mathrm{S}=176 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$.

A
 120.20 kJ
B
$-$110.24 kJ
C
$-46.4 \mathrm{~kJ}$
D
4.64 kJ
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