If Presidency University Kolkata is your dream college then you must have a solid academic record. Your board exam marks matter a lot. But entrance exam scores will be highly emphasized.
You will be asked about the recent developments in the field along with the questions related to class 11th and 12th. Go through R.G Collingwood, Ideas of history, and Glean information from graduate-level books like R.S Sharma, Sumit Sarkar, and Shekar Banerjee.
Having knowledge of post-modern theories like subaltern, queer theory, and genocide concepts will come in handy. Be up-to-date with all these concepts. Another key factor here is your English language skills. You are supposed to write the paper in English. Be careful of what you write and try to make it as thoughtful and transparent as possible. Try to be on point and avoid making convoluted sentences.
If you check all the above-mentioned factors, it's almost certain that you will get into Presidency University Kolkata.