solve all questions please

Q3-a) State three reasons explaining why nitrogen is required to be removed from fuel. [6 Marks] Q3-b) To improve the reforming unit process performance the following process variables are recommended: i- Reactor pressure should be low. Explain why? ii- The fresh and recycled hydrogen partial pressure should be increased. Explain why? iii- Low space velocity is required. Explain why? iv- Higher activity catalysts is required. Why? [8 Marks] Q3-c) What are the primary goals of using catalytic cracking? Write the five steps involved in describing the mechanisim of catalytic cracking reaction. Q3-a) State three reasons explaining why nitrogen is required to be removed from fuel. [6 Marks] Q3-b) To improve the reforming unit process performance the following process variables are recommended: i- Reactor pressure should be low. Explain why? ii- The fresh and recycled hydrogen partial pressure should be increased. Explain why? iii- Low space velocity is required. Explain why? iv- Higher activity catalysts is required. Why? [8 Marks] Q3-c) What are the primary goals of using catalytic cracking? Write the five steps involved in describing the mechanisim of catalytic cracking reaction