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1
MHT CET 2026 18th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which from following is correct expression of first law of thermodynamics for isothermal process?
A
$\text{W} = -\text{Q}$
B
$-\Delta\text{U} = -\text{W}$
C
$\Delta\text{U} = \text{Q}_\text{v}$
D
$\text{Q}_\text{p} = \Delta\text{U} + \text{P}_{\text{ext}}\Delta\text{V}$
2
MHT CET 2026 17th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Calculate the quantity of heat released from system when 2 moles of and ideal gas compressed isothermally from volume $25 \text{ dm}^3$ to $10 \text{ dm}^3$ at constant external pressure 4 bar.
A
$5 \cdot 5 \text{ kJ}$
B
$5 \cdot 0 \text{ kJ}$
C
$6 \cdot 5 \text{ kJ}$
D
$6 \cdot 0 \text{ kJ}$
3
MHT CET 2026 17th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Calculate the standard enthalpy of combustion of carbon monoxide if
$\Delta_f H^\circ (\text{CO}) = -110 \text{ kJ mol}^{-1}$
$\Delta_f H^\circ (\text{CO}_2) = -393 \text{ kJ mol}^{-1}$
A
$-503 \text{ kJ mol}^{-1}$
B
$-110 \text{ kJ mol}^{-1}$
C
$-283 \text{ kJ mol}^{-1}$
D
$-383 \text{ kJ mol}^{-1}$
4
MHT CET 2026 17th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following processes is an endothermic ?
A
The aqueous NaOH and HCl solutions mixed together.
B
Formation of ammonia by Haber process.
C
Ice melts at room temperature.
D
The freezing of liquid water.
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