Which of the following has the least thermal efficiency ?
A. Steam engine
B. Carnot engine
C. Diesel engine
D. Otto engine
Thermodynamics for Chemical
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?
A. Fusion
B. Vaporisation
C. Transition
D. None of these
Heat is added at constant temperature in an ideal ______________ cycle?
Heat is added at constant temperature in an ideal ______________ cycle?
A. Stirling
B. Brayton
C. Rankine
D. None of these
A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?
A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?
A. Less than
B. More than
C. Equal to or higher than
D. Less than or equal to
“If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is ______________ law?
“If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is ______________ law?
A. Hess’s
B. Kirchoff’s
C. Lavoisier and Laplace
D. None of these
In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible _____________ process?
In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible _____________ process?
A. Adiabatic
B. Isometric
C. Isentropic
D. Isothermal
For an ideal gas, the activity co-efficient is_________________?
For an ideal gas, the activity co-efficient is_________________?
A. Directly proportional to pressure
B. Inversely proportional to pressure
C. Unity at all pressures
D. None of these
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be _____________ litres?
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be _____________ litres?
A. 448
B. 224
C. 22.4
D. Data insufficient; can’t be computed
Pick out the correct equation relating ‘F’ and ‘A’___________________?
Pick out the correct equation relating ‘F’ and ‘A’___________________?
A. F = A + PV
B. F = E + A
C. F = A – TS
D. F = A + TS
In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will _____________ the degree of dissociation of PCl5?
In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will _____________ the degree of dissociation of PCl5?
A. Increase
B. Decrease
C. Not alter
D. None of these