A. Is zero
B. Increases
C. Decreases whereas the entropy increases
D. And entropy both decrease
Related Mcqs:
- In any spontaneous process, the ______________ free energy decreases ?
A. Helmholtz
B. Gibbs
C. Both A. & B.
D. Neither A. nor B. - In any spontaneous process, ?
A. Only F decreases
B. Only A decreases
C. Both F and A decreases
D. Both F and A increase - _____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
A. Zeroth
B. First
C. Second
D. Third - For spontaneous changes in an isolated system (S = entropy) ___________________?
A. ds = 0
B. ds <0
C. ds > 0
D. ds = Constant - A change in state involving a decrease in entropy can be spontaneous, only if ____________________?
A. It is exothermic
B. It is isenthalpic
C. It takes place isothermally
D. It takes place at constant volume - Gibbs free energy (G) is represented by, G = H – TS, whereas Helmholtz free energy, A. is given by, A = E – TS. Which of the following is the Gibbs-Helmholtz equation ?
A. [∂(G/T)/∂T] = – (H/T2)
B. [∂(A/T)/∂T]V = – E/T2
C. Both A. and B.
D. Neither A. nor B. - The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by_________________?
A. Biological oxygen pond
B. Aerated lagoons
C. Trickling filters
D. Gravity separator having oil skimming devices - The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the_____________________?
A. Relative humidity
B. Relative saturation
C. Percentage saturation
D. None of these - Joule-Thomson effect i.e., a throttling process is a constant _____________ process?
A. Entropy
B. Temperature
C. Internal energy
D. Enthalpy - Isentropic process means a constant _____________________ process ?
A. Enthalpy
B. Pressure
C. Entropy
D. None of these
