For organic compounds, group contribution method can be used for the estimation of _____________________?
(A) Critical properties
(B) Specific gravity
(C) Specific volume
(D) Thermal conductivity
Which of the following represents the Virial equation of state ?
(A) T = [RT/(V- b)] – [a/√T. V(V + b)]
(B) PV/RT = 1 + (B/V) + (C/V2) + ……
(C) n1u2 + μ2μ1 = 0
(D) None of these
The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are________________?
(A) 5 & 3
(B) 3.987 & 1.987
(C) 1.987 & 0.66
(D) 0.66 & 1.987
The temperature at the eutectic point of the system is the _____________ temperature that can be attained in the system?
(A) Lowest
(B) Highest
(C) Average
(D) None of these
For an ideal gas, the internal energy depends upon its ____________ only?
(A) Molecular size
(B) Temperature
(C) Volume
(D) Pressure
The expression, ΔG = nRT. ln(P2/P1), gives the free energy change______________?
(A) With pressure changes at constant temperature
(B) Under reversible isothermal volume change
(C) During heating of an ideal gas
(D) During cooling of an ideal gas
Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg. K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is_______________?
(A) Superheated vapour
(B) Partially condensed vapour with quality of 0.9
(C) Saturated vapour
(D) Partially condensed vapour with quality of 0.1
If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?
(A) -19.4
(B) -30.2
(C) 55.2
(D) -55.2
Which of the following liquid metals has the highest thermal conductivity ?
(A) Molten sodium
(B) Molten lead
(C) Mercury
(D) Molten potassium
High _____________ is an undesirable property for a good refrigerant?
(A) Specific heat
(B) Latent heat of vaporisation
(C) Viscosity
(D) Specific vapor volume