Hello Utkarsh , 150 marks are good enough in NTSE stage 1. But every state has different cut off , and as per the expected cut off for Madhya Pradesh , Below are the expected marks for different categories

General                       164+

OBC                             150+

ST                                 145+

SC                                137+

So if you come in other category rather than General and OBC , You have good chance to get selected for next stage.

But if you fall under general or OBC , category , then it is quite difficult for you to get qualify for next stage.

But remember cut off get changes. so never loss hope. Wait for the result.

I hope it will help.

Thanks.