23. If ΔQ and ΔW represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as (a) ΔQ= ΔU + ΔW (b) ΔQ= ΔU – ΔW (c) ΔQ= ΔW-ΔU (d) ΔQ= – ΔW-ΔU Ans. b (6) Read More
