English is a must in study topic for any competitive exam. You cannot score good rank in a competitive exam without mastering in English Language. You can except a lot of questions from English in any competitive exams. And if you study well you can score full marks in English.
Most of the question in English section of any competitive exam will be from the Grammar section. PSC mainly asks questions from the Grammar section and for Bank exam and all they ask application level questions which also require you to be thorough in English Grammar.
Here we give a series of tutorials which will help you score a good marks in the English section in any competitive exams.
For PSC exams you can check the syllabus of English here.