Question $1(30\%)$ CLO$1$

a$)$ What is the significance of the Zeroth Law in the development of

thermodynamics? How does it help us to define temperature?

b$)$ With the aid of a diagram, describe the idea of thermal equilibrium and its

significance in Thermodynamics.

c$)$ Explain the Zeroth Law of Thermodynamics by using a real$-$world example to

demonstrate.

Question $2(35\%),$ CLO$2$

$($a$)$ Describe what is an adiabatic process and describe what is a reversible process.

Provide an example for each process. Compare and highlight their commonalities

and differences.

$($b$)$ A piston$-$cylinder device initially contains $1\mathrm{.}2$ kg of air at $30\mathrm{.}35C$ and $1$ atm $.$ An

adiabatic and reversible process occurs for the air until its volume double.

i$.$ Determine the initial volume of air using the ideal gas law.

ii$.$ Determine the final pressure of the air under these adiabatic and reversible

conditions.