Related Questions

At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.
A Varies linearly
B Increases
C Decreases
D Does not vary
Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.
A 3
B > 3
With increase in temperature, the atomic heat capacities of all solid elements
A Increases
B Decreases
C Remains unchanged
D Decreases linearly
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.
A Change
B Do not change
C Both (A) and (B)
D None of these
In case of non-ideal gases and liquids, the molal diffusivity
A Varies inversely as the pressure
B Varies directly as the pressure
C Is independent of pressure
D Is equal to the volumetric diffusivity
The atomic heat capacities of all solid elements __________ with decrease in temperature.
A Increases
B Decreases
C Remains unchanged
D Approach zero at 0°C
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the
A Trouton's rule
B Kopp's rule
C Antonie equation
D Kistyakowsky equation
Which of the following assumes constant molal vaporisation and overflow?
A McCabe-Thiele method
B Ponchan-Savarit method
C Enthalpy concentration method
D Plate absorption column
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is
A Equal to one
B Less than one
C Greater than one
D None of these
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the
A Surrounding temperature
B Average temperature of the fin
C Temperature of the fin end
D Constant temperature equal to that of the base

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