A. Molar concentration
B. Quantity (i.e. number of moles)
C. Both A. and B
D. Neither A. nor B
Related Mcqs:
- 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 - Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called ____________ solutions?
A. Ideal
B. Real
C. Isotonic
D. None of these - Free energy change of mixing two liquid substances is a function of the__________________?
A. Concentration of the constituents only
B. Quantities of the constituents only
C. Temperature only
D. All A, B. and C - Entropy of an ideal gas depends upon its__________________?
A. Pressure
B. Temperature
C. Both A. & B
D. Neither A. nor B - Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of___________________?
A. Solution
B. Vaporisation
C. Formation
D. Sublimation - If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?
A. Enthalpy
B. Volume
C. Both A. & B.
D. Neither A nor B - High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?
A. Δ H = 0 and ΔS = 0
B. Δ H ≠ 0 and ΔS = 0
C. Δ H ≠ 0 and ΔS ≠ 0
D. Δ H = 0 and ΔS ≠ 0 - In a homogeneous solution, the activity co-efficient of a component depends upon the_________________?
A. Pressure
B. Composition
C. Temperature
D. All (A), B. and (C) - The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?
A. Zero
B. Negative
C. More than zero
D. Indeterminate - The work done in an adiabatic change in a particular gas depends upon changes in the ______________ only?
A. Temperature
B. Specific heat
C. Volume
D. Pressure
