If q is the heat added to the system, w is the work done by the system – InterviewSolution

1.	If q is the heat added to the system, w is the work done by the system and Delta U is the change in internal energy, then according to first law of thermodynamics :
Answer» <P>`Delta U = q + w` `Delta U = q - w` `Delta U = q + p Delta V` `Delta U = q + Delta H` ANSWER :B

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