1
MHT CET 2023 10th May Morning Shift
+1
-0

The difference between $$\Delta \mathrm{H}$$ and $$\Delta \mathrm{U}$$ is usually significant for systems consisting of :

A
only solids
B
only gases
C
only liquids
D
both solids and liquids
2
MHT CET 2023 10th May Morning Shift
+1
-0

What is change in internal energy when system releases $$8 \mathrm{~kJ}$$ of heat and performs $$660 \mathrm{~J}$$ of work on the surrounding?

A
$$-7340 \mathrm{~J}$$
B
$$-5400 \mathrm{~J}$$
C
$$-8660 \mathrm{~J}$$
D
$$-1212 \mathrm{~J}$$
3
MHT CET 2023 10th May Morning Shift
+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
$$8.0 \mathrm{~dm}^3$$
4
MHT CET 2023 9th May Evening Shift
+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
$$-794 \mathrm{~kJ}$$
EXAM MAP
Medical
NEET