The process involves a series of questionnaires. The length of these will vary depending on the type of questionnaire. This is a vital component of the process as it provides additional information about you at work, the way you like to work, how you like to be managed and so on. The best thing to do in preparation for a psychological appraisal is get a good sleep the night before and try to relax.
Different people get different tests depending on what is required for the role.
Therefore, whilst you may get some verbal and numerical tests, other people may get some numerical, spatial, and verbal tests. Yes, you can. You are entitled to receive feedback on your results. You may like to take notes during feedback.