Hello Tanish,  Good morning.
Scoring 170+ marks In NTSE is really good thing.  Final results of NTSE stage 1 is not released yet,  But you can predict your chance of selection based on expected cut off marks.  As per these,  The expected cut off for general category is 130-140+ .
So as per this marks,  You will definitely got selected for next stage of NTSE.
So be prepared for stage 2.
Good luck for your next exam.
I hope it will help you more.
Thanks.

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