Q1: Steam economy in case of a triple effect evaporator will be

ANS:C - >1

Steam economy refers to the efficiency of steam usage in an evaporator system, typically expressed as the ratio of the amount of vapor produced to the amount of steam consumed. In a triple effect evaporator, multiple effects are utilized to extract heat from the vapor generated in one effect to heat the feed in the subsequent effects. This cascading effect allows for significant energy savings compared to single-effect evaporators. The steam economy in a triple effect evaporator is typically greater than 1, indicating that more vapor is produced than the amount of steam consumed. This is because the heat from the vapor generated in one effect is reused to heat the feed in subsequent effects, leading to increased efficiency and reduced steam consumption per unit of vapor produced. Therefore, the correct answer is: > 1.