true there are, and it mainly depends on how the person does each.
If someone while they are doing questions is spending *way more time* analyzing the answers and then going back and forth from the answers to their primary reveiw sources, it's more productive. If you actively do questions in such a way that you make sure you know why the right answer is the right and the wrong answers are wrong answers(as well as knowing how the question could be changed to make the wrong answers right), it's more productive.
But I know some people who will spend 3 hrs doing 3 blocks of 50 questions and then totally skim over the ones they got right, even if there were some answer choices that,while they knew weren't the right choices, didn't really have a full understanding of. And then they'll spend 20 minutes skimming over the 45 or so questions they missed and act like they "studied" over 3 hrs.......in reality what they did was ascertain where they were at to some degree(and there is a great deal of confidence/value in that), but in terms of helping them get additional questions right it's not of great value if you do it that way.