A thermodynamic system undergoes cyclic process ABCDA as shown in the figure. The work done by the system in the cycle is

A Carnot engine, having an efficiency of $\eta = \frac{1}{10}$ as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

The figure below shows two paths that may be taken by a gas to go from a state A to a state C. In process AB, $400$ J of heat is added to the system and in process BC, $100$ J of heat is added to the system. The heat absorbed by the system in the process AC will be

A gas is compressed isothermally to half of its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then

Thermodynamic processes are indicated in the following diagram: Match the following:

A Carnot engine, having an efficiency of $\frac{1}{10}$ as a heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

The efficiency of an ideal heat engine working between the freezing point and boiling point of water is

A sample of $0.1$ g of water at $100^{\circ}C$ and normal pressure $(1.013 \times 10^5$ N/m$^2)$ requires $54$ cal of heat energy to convert to steam at $100^{\circ}C.$ If the volume of the steam produced is $167.1$ cc, the change in internal energy of the sample is

In which of the following processes, heat is neither absorbed nor released by a system?

Two cylinders $A$ and $B$ of equal capacity are connected to each other via a stopcock. $A$ contains an ideal gas at standard temperature and pressure. $B$ is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. The process is:

An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric, and isochoric. The curve which represents the adiabatic process among 1, 2, 3 and 4 is:

A Carnot engine has an efficiency of 50% when its source is at a temperature $327^\circ C.$ The temperature of the sink is:

A thermodynamic system is taken through the cycle abda. The work done by the gas along the path bc is: