BITSAT

Cut-offs for different branches and bits centers are different the highest is for BITS Pilani CSE, it is around 380 and the lowest for some non-core branch in BITS Goa/Hyderabad which is around 315-320.

I also had the same score in 2015. But, I didn't get any NIT. You should wait for the result. Your rank will decide whether you will get in or not.

You cannot apply after the last day of application.

It depends upon many factors, and also the cutoff of each branch is different. To get entry into any branch, you need to score minimum of 300 or even above that.

In case you missed the slot booking of a particular slot, do book some other slot compulsorily. It is Mandatory in BITSAT to book a slot prior to examination.

Yes, you can appea. All exam are conducted on different days.

As much as you can.
If you are talking about the JEE MAIN exam, then you know that the cutoff for general category is maximum. And one should need to score more than of it. Like 170+ to get a seat in the NIT. The admission further will depend on you that which branch you opt. For mechanical it is high and then electronic etc. The order goes. So, just perform well and score more as much as you can. If you score like this then you will definitely get a seat and the branch you want.

The syllabus of class 11th and class 12th carry a lot of weightage in BITSAT. It is a concept based paper, if your concepts of class 11th and class 12th are clear, and if you have a good command on mental ability and logical reasoning, you can easily clear BITSAT.

Yes you can appear for both jee mains and bitsat in the same year you gave your 10+2 boards.

I suggest answering the question that is not related to maths unless they less time taking.