1
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the final volume when 2 moles of an ideal gas expand from $$3 \mathrm{~dm}^3$$ at constant external pressure 1.6 bar and the work done in the process is $$800 \mathrm{~J}$$.

A
$$2.66 ~\mathrm{dm}^3$$
B
$$4.8 \mathrm{~dm}^3$$
C
$$5.0 \mathrm{~dm}^3$$
D
$$8.0 \mathrm{~dm}^3$$
2
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For $$\mathrm{NaCl}_{(\mathrm{s})}$$ enthalpy of solution is $$4 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ and lattice enthalpy is $$790 \mathrm{~kJ} \mathrm{~mol}^{-1}$$. What is hydration enthalpy of $$\mathrm{NaCl}$$ ?

A
$$786 \mathrm{~kJ}$$
B
$$794 \mathrm{~kJ}$$
C
$$-786 \mathrm{~kJ}$$
D
$$-794 \mathrm{~kJ}$$
3
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of $$\Delta H-\Delta U$$ for the following reaction?

$$2 \mathrm{C}_{(\mathrm{s})}+3 \mathrm{H}_{2(\mathrm{~g})} \rightarrow \mathrm{C}_2 \mathrm{H}_{6(\mathrm{~g})}$$

A
$$4 \mathrm{RT}$$
B
$$-5 \mathrm{RT}$$
C
$$\mathrm{RT}$$
D
$$-2 \mathrm{RT}$$
4
MHT CET 2023 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An ideal gas expands by $$1.5 \mathrm{~L}$$ against a constant external pressure of $$2 \mathrm{~atm}$$ at $$298 \mathrm{~K}$$. Calculate the work done?

A
$$-75 \mathrm{~J}$$
B
$$-303.9 \mathrm{~J}$$
C
$$13.3 \mathrm{~J}$$
D
$$-30 \mathrm{~J}$$
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