Chemical Engineering Thermodynamics Tea kept in a thermos flask is vigorously shaken. If the tea is considered as a system, then its temperature will First fall and then rise Increase Remain unchanged Decrease First fall and then rise Increase Remain unchanged Decrease ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect? Vapor compression cycle using expansion engine Carnot refrigeration cycle Air refrigeration cycle Vapor compression cycle using expansion valve Vapor compression cycle using expansion engine Carnot refrigeration cycle Air refrigeration cycle Vapor compression cycle using expansion valve ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Co-efficient of performance for a reversed Carnot cycle working between temperatures T₁ and T₂ (T₁ > T₂) is (T₁ - T₂)/T₁ T₁/(T₁ - T₂) T₂/(T₁ - T₂) (T₁ - T₂)/T₂ (T₁ - T₂)/T₁ T₁/(T₁ - T₂) T₂/(T₁ - T₂) (T₁ - T₂)/T₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For spontaneous changes in an isolated system (S = entropy) Ds = Constant Ds <0 Ds > 0 Ds = 0 Ds = Constant Ds <0 Ds > 0 Ds = 0 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is -2 RT ln 0.5 2 RT 0.5 RT -RT ln 0.5 -2 RT ln 0.5 2 RT 0.5 RT -RT ln 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following is not an extensive property? Entropy Free energy None of these Refractive index Entropy Free energy None of these Refractive index ANSWER DOWNLOAD EXAMIANS APP
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