Ok i explain it here.
In precise paper few are rhe questions with pet marks
Like direct indirect speech
Pair of words
Sentence correction and idioms
About other questions precise, comprehension and expansion you are never sure how much score examiner will endow you but in case of above questions you know either you get this many marks or not. In other words it places you in safe place for passing this paper

This year pet questions were only two,sentence correction and idioms and that too each sentence and idiom of two marks each. It put candidates more on a verge of scoring full or losing at least 10-15 pet marks if you are not sure about sentence correction. I could not do well in this section of paper and that too with objective portion puts me in borderline.

This year precise may be high scoring as well, low scoring a typical characterstic of a tricky paper.