Thermodynamics MCQs

Question 1

If the molar heat capacities (C p or C v ) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will

Accepted Answer

Remain unaltered

Answer

Increase

Answer

Decrease

Answer

Increase or decrease ; depends on the particular reaction

Question 2

For the gaseous phase chemical reaction, C 2 H 4 (g) + H 2 O(g) ⟷ C 2 H 5 OH(g), the equilibrium conversion does not depend on the

Accepted Answer

None of these

Answer

Steam to ethylene ratio

Answer

Temperature

Answer

Pressure

Question 3

Which is not a refrigerant?

Accepted Answer

C 2 H 4 Cl 2

Answer

SO 2

Answer

NH 3

Answer

CCl 2 F 2

Question 4

For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

Accepted Answer

∫C p .dT

Answer

C v .dT

Answer

C p .dT

Answer

∫C v .dT