Sublimation temperature of dry ice (solid CO2) is ____________ °C?
Sublimation temperature of dry ice (solid CO2) is ____________ °C?
A. -273
B. 0
C. -78
D. 5
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The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?
The adiabatic throttling process of a perfect gas is one of constant enthalpy_________________?A. In which there is a temperature drop
B. Which is exemplified by a non-steady flow expansion
C. Which can be performed in a pipe with a constriction
D. In which there is an increase in temperatureThe equation, PV = nRT, is best obeyed by gases at____________________?
The equation, PV = nRT, is best obeyed by gases at____________________?A. Low pressure & high temperature
B. High pressure & low temperature
C. Low pressure & low temperature
D. None of theseA cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is_________________?
A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is_________________?A. 349
B. 651
C. 667
D. 1000Entropy is a measure of the _____________ of a system?
Entropy is a measure of the _____________ of a system?A. Disorder
B. Orderly behaviour
C. Temperature changes only
D. None of theseReduced pressure of a gas is the ratio of its__________________?
Reduced pressure of a gas is the ratio of its__________________?A. Pressure to critical pressure
B. Critical pressure to pressure
C. Pressure to pseudocritical pressure
D. Pseudocritical pressure to pressureThe Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?A. Less
B. More
C. Same
D. Dependent on climatic conditions