Thermodynamics MCQs

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

The ammonia synthesis reaction represented by N₂ + 3H₂ ⇋ 2NH₃; ΔH = -22.4 kcal, is

In the reaction, H₂ + $${I_2}$$ ⇋ 2H$$I$$, addition of an inert gas will

In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when

A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂. (where, P₁ and P₂ are initial and final pressures respectively)

In the reaction, C + O₂ → CO₂; ΔH = -94 kcal. What is the heat content (enthalpy) of O₂?

Degree of freedom of a system consisting of a gaseous mixture of H₂ and NH₃ will be

Which of the following is not a unit of the equilibrium constant K_p? (where, Δx = number of moles of products number of moles of reactants)

The accentric factor of a materical, 'ω', is defined as ω = -log₁₀ (P_r^sat)T_r^-1 = 0.7, where, P_r^sat = reduced vapor pressure, T_r = reduced temperature. The value of accentric factor is always