General Knowledge is the Part of Banking Exam Syllabus. You need to give importance to this subject along with others. I found this website Encyclopedia Britannica which will help you for GK Preparation for Banking Exam.
There is no limit of General Knowledge, as much as you learn will benefit you.
Multiple resources are available to acquire General Knowledge.
You can use Books, News Paper, and Magazines to acquire General Knowledge for any competitive Examination.
Use this 10 Website for Banking preparation.
I came across this websites, Full of General Knowledge which can be used for Banking preparation.
To grab the General Knowledge you have to work hard because there is no limit to learn. More you learn more you powered.
This Website is full of Biography, Quizzes, Galleries, and lots of required information for your preparation.
Suggest you read every day at least one information from this website to improve your GK for Banking preparation.