Hello,

first of all congrats !!Rank vs marks estimation changes every year and it depends on several factors.Based on previous year trends the following is the estimated list.

marks                          rank

200+                             300

185+                              700

170+                            1400

160+                            2400

150+                            4400

140+                             7000

120+                            10.5K

So your rank can be between 2.4k-4k.This is just based on analysis.In the real ranking factors like competition and difficulty of paper etc may cause variation in it.

Good luck for your future!