Embibe Experts Solutions for Chapter: Thermodynamics, Exercise 1: AP EAPCET Medical 2018 (22-Apr Shift-1)

If system $A$ is in thermal equilibrium with $B$ and $B$ is separately in thermal equilibrium with $C,$ then $A$ and $C$ are in thermal equilibrium. From which thermodynamics law, does this follow?

Match the following: (where $R$ is gas constant)

When the state of a gas is adiabatically changed from an equilibrium state $A$ to another equilibrium state $B,$ the amount of work done on the system is $35 \mathrm{J}.$ If the gas is taken from state $A$ to $B$ via a process in which the net heat absorbed by the system is $12 \mathrm{cal},$ the net work done by the system in joule $(1\mathrm{cal}=4.2 \mathrm{J})$

Figure below shows a cyclic process $abcda.$. If $\Delta Q$ be the heat supplied to the system. $\mathrm{\Delta }U$ be the change in internal energy and $\Delta W$ be the work done by the system, then which of the following relation is correct ?

What amount of heat is to be supplied to $4\times {10}^{-2} \mathrm{kg}$ of Nitrogen at room temperature, to rise its temperature by $50°\mathrm{C},$ at a constant pressure? $\left(R=8.3 \mathrm{J}.{\mathrm{mol}}^{-1}·{\mathrm{K}}^{-1}\right.$and molecular weight of nitrogen is $28 )$

Match the following?

By leaving the door of a small standard domestic refrigerator open, it is not possible to cool a room, because it violates the ______

An ideal gas heat engine operates in Camot cycle between $227°\mathrm{C}$ and $127°\mathrm{C}.$ It absorbs $6\times {10}^4\mathrm{cal}$ at the higher temperature. the amount of heat converted into work is equal to: