Hi Disha...

After JEE Advanced & MAINS, The next toughest exam is BITSAT.

For qualifying BITSAT u need to be very perfect with all the basic concepts,Try to revise as many concepts as possible and solve previous exam question papers.

Dont depend on the marks u get in those practise exams but try to figure out the topics which u are strong in and time taking to solve each question.

To getting into it u need to be equally strong in all the three Physics,Chemistry & Maths.coz allover India many lakhs of  students attend the exam and there is very tough competition.

Give ur Best!!!

Yes it is easy to qualify BITSAT. Its easier than Jee mains and advance if you have studied properly. You can term it difficult in case of speed and accuracy as you have to solve 150 questions in 180 minutes. For physics you can reger to books having sums of Jee level such as HC Verma. If you can solve these sums with speed and accuracy BITSAT is a very easy exam for you.