The state of gas can be described by quoting the relationship between _________ .
(i) pressure, volume, temperature
(ii) temperature, amount, pressure
(iii) amount, volume, temperature
(iv) pressure, volume, temperature, amount
The answer is option (iv) pressure, volume, temperature, amount.
Explanation: The states of a gas can be described by the relationship between the variables such as p, V, T and the amount of gas. These variables are called state variables. Their values are only concerned with the current state of the system.