List of top Chemistry Questions on Thermodynamics asked in KCET

A gas can be taken from A to B via two different paths ACB and ADB.
When path ACB is used, 60J of heat flows into the system and 30J of work is done by the system. If path ADB is used, work done by the system is 10J. The heat flow into the system in path ADB is}
Which of the following is a correct statement for a thermodynamic system?
A: Entropy of a perfect crystalline solid at absolute zero approaches zero.
B: For spontaneity of a reaction, T\(\Delta\)S>\(\Delta\)H.
Among the two statements given above, identify the correct answer from the options given below.
Given below are two statements.
Which one of the following reactions has
\(\Delta H = \Delta U\)?
Identify the incorrect statements among the following:
For the reaction, A ⇌ B, Ea = 50 kJ mol−1 and ΔH = −20 kJ mol−1. When a catalyst is added, Ea decreases by 10 kJ mol−1. What is the Ea for the backward reaction in the presence of catalyst?
Which one of the following does not represent the Arrhenius equation?
From the diagram
Reaction Fig
\( \Delta H \) for the reaction C → A is:
Lattice enthalpy for NaCl is +788 kJ mol-1 and ΔH°hyd= -784 kJ mol-1. Enthaply of solution of NaCl is
For the formation of which compound in Ellingham diagram ΔG° becomes more and more negative with increase in temperature ?
The work done when 2 moles of an ideal gas expands reversibly and isothermally from a volume of 1L to 10L at 300 K is (R = 0.0083 kJK mol-1)
One mole of $O_2$ gas is heated at constant pressure starting at $27^o$C. How much energy must be added to the gas as heat to double its volume?
A reaction has both $\Delta \,H$ and $\Delta \,S$ - ve The rate of reaction
The amount of heat evolved when $500 \, cm^3$ of $0.1 \, M \, HCl$ is mixed with $200\,cm^3$ of $0.2 \, M \, NaOH$ is
Molecules of a noble gas do not possess vibrational energy because a noble gas _________
A mixture of two moles of carbon monoxide and one mole of oxygen, in a closed vessel is ignited to convert the carbon monoxide to carbon dioxide.If $\Delta H$ is the enthalpy change and $\Delta E$ is the change in internal energy, then,
When $50\, cm ^{3}$ of $0.2\, N$ $H_{2} SO _{4}$ is mixed with $50 cm ^{3}$ of $1 N\, KOH$, the heat liberated is :
Heat liberated' when 100 mL of 1 N NaOH isneutralised by 300 mL of 1 N HCl
Hesss law states that
From the diagram
ΔrH for the reaction C → A is
ΔrH for the reaction C → A is