Question Text
Question 1 :
What is most commonly used as the refrigerant in heat pumps?
Question 2 :
Which of the following is true in the case of a reversible process :<br/>
Question 3 :
A gas may expand either adiabatically or isothermally. A number of P-V curves are drawn for the two process over different ranges of pressure and volume. It will be found that;
Question 4 :
In which of the following process the system and surrounding does not comes back to original state after the process is complete?
Question 7 :
During what kind of process is there no change in internal energy?
Question 8 :
Choose the correct options for the following statements :A) First law of thermodynamics specifies the conditions under which a body can use its heat energy to produce the work.<br/>B) Second law of thermodynamics states that heat always flows from hot body to cold body by itself.<br/>
Question 9 :
Which of the following is not a characteristic of an irreversible process?
Question 12 :
Which of the following is not the component of heat pump?<br><br>
Question 15 :
A gas expands adiabatically at constant pressure, such that its temperature $T \propto \frac{1}{\sqrt{V}}$. The value of $C_p / C_V$ of the gas is:
Question 16 :
Heat flows between two bodies due to difference in their temperature.
Question 17 :
Which of the following statement is true as per the second law of thermodynamics for an isolated, ordered system?<br/>
Question 18 :
The volume of $1 m^3$ of gas is doubled at atmospheric pressure. The work done at constant pressure will be
Question 19 :
Assertion: It is not possible for a system unaided by an external agency to transfer heat from a body at lower temperature to another at a higher temperature.
Reason: It is not possible to violate the 2nd law of thermodynamics.
Question 20 :
Work done in an adiabatic process between a given pair of end states depends on