Short answer : Yes.
Long answer : We have categorized tests into various categories - Standard Tests and (optionally) Practice Tests, and Objectivewise Tests.
Standard Tests cover all the questions in the question bank i.e. if you take all the Standard Tests, you would see all the questions in the question bank. Therefore, if you then take Practice or Objective-wise test, you will not get any new questions.
Similarly, if you take one Standard Test and then try a Practice Test, you may get some questions that you have already seen.
Practice Tests and Objective wise Tests pick questions randomly from the question bank. Therefore, if you take a Practice Test or an Objectivewise Test multiple times, some questions will be repeated.
You should take only the tests that match the mode of your preparation. For example, if you are done with your studies, you should only take the Standard Tests. If you are going through a book and have read only one objective, you may take a test on that particular objective.
If your question bank contains "Last Day Test (Unique)", you may take this test even after taking other tests because questions in this test are explicitly excluded from all other tests. This is done so that even if you take Practice tests or Objective wise tests, you will still have one Standard Test which will give you a true picture of your preparation.
Can I take the same Test again?/How many times can I take a Standard Test?
You can take any test any number of times. However, you should not take a Standard Test more than once because a Standard Test contains preset questions and if you take the test again, you will get the same questions. The score that you get will therefore not indicate your true level of preparation.