For the process to occur under adiabatic conditions, the correct condition is:

(i)


(ii)


(iii) q = 0


(iv) w = 0


Adiabatic process is processes that take place without any transfer of heat between the system and surrounding. i.e, in adiabatic process q = 0

Thus answer is (iii) q = 0


[Option (i) is an isothermal process. In the isothermal process, the temperature of the system remains constant.


Option (ii) is for isobaric process; where pressure of system is kept constant.]


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