Historically, market tends to fall more vs rise on Budget day.
Remember than back in Budget 2015, the markets fell 700 points, only to rise and end green with gains of 141 points. That was a one-off situation and the global scenario was still positive. Still, we saw major volatility.
This year, with a jittery environment, I think that markets on Budget day could drop below 7000 and could end anywhere between 6800 and 7200.