Q2. A filter with an area of 2 m² operates at a constant pressure drop of 250 kPa to filter a coal slurry. A test gives the following results with an incompressible cake: Volume of filtrate collected (litre) Time (min) 280 430 540 680 800 10 20 30 45 60 If you run the above filtration test at a constant pressure drop of 500 kPa, predict the experimental outcomes: a) What time is required to collect 2 m³ of filtrate? b) What are the filtration rates (volume flow rate of filtrate) at the start and end of the filtration, respectively? Comment on the change in the filtration rate as a function of time and briefly explain why.