1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two moles of an ideal gas is expanded isothermally and reversibly at 300 K from 1 L to 10 L . The enthalpy change in kJ is

A
11.4 kJ
B
4.8 kJ
C
$-$11.4 kJ
D
zero kJ
2
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$\begin{aligned} & \text { If } \mathrm{C}(s)+\mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g), \Delta H=-X \\ & \mathrm{CO}(g)+\frac{1}{2} \mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g), \Delta H=-Y \end{aligned}$$ Calculate $\Delta_f H$ for $\mathrm{CO}_{(g)}$ formation

A
$-Y-X$
B
$Y-X$
C
$X+Y$
D
$X-Y$
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three moles of an ideal gas are expanded isothermally from a volume of $300 \mathrm{~cm}^3$ to 2.5 L at 300 K against a pressure of 1.9 atm . The work done in joules is

A
$-$423.56 J
B
+423.56 J
C
$-$4.18 J
D
+4.8 J
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at $27^{\circ} \mathrm{C} ?\left(R=2 \mathrm{cal} \mathrm{K}^{-1} \mathrm{~mol}^{-1}\right)$

A
54 cal
B
$-$600 cal
C
$-$300 cal
D
27 cal
MHT CET Subjects
EXAM MAP