Q1) Choose the correct answer 1. Free energy change at equilibrium is Zero positive % Negative 2- When a liquid and its vapour are in equilibrium at a certain pressure and temperature, then which of the following is required to identify the saturation state. a) pressure temperature c) both pressure and temperature d) pressure or temperature Q1) Choose the correct statement or segments 1. Which of the following statement is true? a) pressure values effects on saturation temperature b) temperature value effects on saturation pressure c) both of the mentioned d) none of the mentioned 2. The equation dU=Cv*dt holds good for a) any process for an ideal gas, even when the volume changes b) for other substances it is true only when the volume is constant c) both of the mentioned