Question

Which changes can reach dynamic equilibrium? 1. nuclear changes, only 2. chemical changes, only 3. nuclear and physical changes 4. chemical and physical changes

Answer 1

Equilibrium is where two conditions are in state of equilibrium. There is no change in the condition of a system

the equilibrium could be

a) static

b) dynamic

In case of chemical reaction we reach a dynamic equilibrium as the two side reactions are still going on however the rate of forward reaction becomes equal to rate of backward direction.

Thus it is in dynamic equilibrium

in physical changes it happen that the one phase get converted to other phase and with the same rate the second phase is being converted to firs phase

thus answer is

chemical and physical changes

Answer 2

4 chemical and physical changes only