1) why multible fixed bed used in hydrocraking process(give reason)

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Q1) [30 Marks, each 3 Marks] Which of the following statements is true (T) and which one is false (F) a. One of the advantages of using Zeolite as a catalyst in coking process is to increase coke yield ( ). b. Sponge coke is produced in the delayed coking process when no asphaltene is contained in the feedstock ( ). c. Acid sites on catalyst used for hydrocracking is poisoned by reaction with hydrogen ( ) d. Multiple bed is used in a fixed bed reactor for hydrocracking process to minimize catalyst's fouling. ( ) e. Visbreaking is a catalytic cracking operation ( ). f. Flexi-coking is a combination of thermal cracking and coke gasification/combustion ( ). g. Nearly 5% of the typical crude oils contain 370C+ fractions ( ). h. Hydrocracking is the conversion process of light petroleum fractions to heavy hydrocarbons ( ). i. The isomerization products contain high amount of benzene, aromatics and olefins ( ). j. The product from reforming process is known as Polygas (