Key Points:

Mock tests are important because they give you an actual feel of the exam before the actual exam.
Analyzing your mocks can actually improve your performance by the time you actually appear for the actual exam.
As far as analyzing your mock test is considered physics chemistry and biology every subject has a different strategy.

Should you analyze the right answers?

No.

Something which you're getting right now
you will get them right during your
actual exam as well.

Yes.

Broadly group the mistakes (obviously there will be other types of mistakes as well) into three categories.

You know these questions.
You understand the concepts of this question.
You will definitely arrive at the right answer when you are in a relaxed state probably but during the mock maybe or over excitement or under confidence you markednit wrong.
Solution : Give more and more mock test & silly mistakes will improve.

You don't understand what the concept is.
You don't have any idea.
Solution: In such a scenario i'll say look at previous year questions : if similar questions have been asked fair enough & if they haven't been asked let it go.

It doesn't really matter if it hasn't been as in past 10 years there's a very high chance that it won't be asked this time as well.

As far as chemistry in organic chemistry and biology is concerned uh they are mostly factual errors.
You are not able to remember the facts: they can be the factual errors.
Two types of Fatual errors: - Things which are not remembering from NCERT and things which are remembering from NCERT.
Solution: If you're you are not able to remember something which is outside of NCERT in that particular mock i'll say doesn't really matter. Just move on .
Solution: But if you're not remembering something from NCERT then read that chapter and read those particular paragraphs and than understand NCERT again.