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Name the two processes used to remove ink. 

What is the filter medium in multi-disk filters? Pick one of the following

Why are screens usually used in series, the rejects from a primary screen going to a secondary screen, etc.?

Even though mechanical pulps are generally not exposed to beating/refining, several mills are refining mechanical pulps to try to cut mechanical fiber even further. Why do you think they do that? (Hint: Think about the big advantage of mechanical fibers besides cost, what do mechanical fibers IMPROVE). 

Which of the following statements are true 

How is the vacuum in a vacuum washer (drum washer) usually generated?

Describe a forward cleaner. Be sure to address the following questions.  Where is the pulp inlet? Separation is accomplished based on what principles? Where do rejects and accepts exit?

Why is Mg salt added to the oxygen bleaching system?

Why is it that you generally have a washing stage after every bleaching stage? Do you normally send the bleach plant effluent to chemical recovery section? If not why not? Where do you send the bleach plant effluent then?

Sort the following bleaching chemicals in the order of their selectivity