when the officual answer key of uttar pradesh stage 1 2020 and result will be declared??

Katyayani, the official cutoff for NTSE stage 1 had not yet been released by the Exam Regulatory Authority, Uttar Pradesh. Also there is no communication as to when it is supposed to be released. Although the coaching institutes have released their own answer key and you can visit the below link to get the tentative answer key and check your probable score: https://school.careers360.com/articles/ntse-uttar-pradesh-answer-key

Regarding the results of stage 1, it is supposed to be released tentatively in the last week of February 2020. The result will be in the form of a PDF file containing the details and MAT, SAT and total marks scored by the qualified candidates. You can find your name and roll number in the list to check if you have qualified for stage 2.

For more details on important dates, previous years' cutoff and other information, you can visit: https://school.careers360.com/articles/ntse-uttar-pradesh