• # question_answer 47) The first law of thermodynamics is represented by A) $\Delta E=\Delta Q+\Delta W$B) $\Delta E=\Delta Q+\Delta W$C) $\Delta E =\Delta Q+\Delta W$D) $\Delta E =Q-W$

According to the first law of thermodynamics, Change in internal energy = Heat added to the system + Work done on the system. Hence, $\Delta E=Q+W.$ Hence, the correct option is (c).