Question

write any two differences between steady and variable state of temperature
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Answer 1

Is there a difference between steady state and equilibrium?

Yes. There is big difference actually.

 

How would I explain it?

TL;DR;  

The simplest example I can think of is a broken circuit v/s a closed circuit consisting of a battery and a wire. The first is in equilibrium, the second is in a steady state.

1. In an equilibrium a single process is occurring at the same rate in the forward and backward directions, so that over time, there is "no net change" in the composition of the system.
2. Chemical Equilibrium: In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present at concentrations which have no further tendency to change with time.[1] Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction.
3. Fluid Flow: Take an example of a pascal's law. The fluid stops flowing when the forces are balanced. This is equilibrium.
4. Electric Circuit: In a broken circuit, the potential difference is zero and hence it is equilibrium.

2. In a steady state, there is likewise no net change over time in the process variable.
3. Chemical Steady State: Take a reactor with the reactants in plug flow. After a long time the extent of reaction at a particular reaction will be fixed. This is a steady state.
4. Fluid Flow:Open your tap and after the initial second or even less, the flow coming out would be the same. There is a net flow and hence it is a steady state
5. Electric Circuit: In a close circuit, the current is steady because of a steady potential difference.