“Dry ice” is________________?
“Dry ice” is________________?
A. Moisture free ice
B. Solid helium
C. Solid carbon dioxide
D. None of these
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Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the__________________?
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the__________________?A. Cold reservoir approaches zero
B. Hot reservoir approaches infinity
C. Either A. or B
D. Neither A. nor BFor a real gas, the chemical potential is given by_____________________?
For a real gas, the chemical potential is given by_____________________?A. RT d ln P
B. RT d ln f
C. R d ln f
D. None of theseThe second law of thermodynamics states that___________________?
The second law of thermodynamics states that___________________?A. The energy change of a system undergoing any reversible process is zero
B. It is not possible to transfer heat from a lower temperature to a higher temperature
C. The total energy of system and surrounding remains the same
D. None of the aboveRefrigerants commonly used for domestic refrigerators are_________________?
Refrigerants commonly used for domestic refrigerators are_________________?A. Ethyl chloride or methyl chloride
B. Freon-12
C. Propane
D. NH3 or CO2_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?A. Zeroth
B. First
C. Second
D. ThirdA 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