National Institute of Science Education and Research, Bhubaneswar (NISER) has sent the NEST 2021 Answer Key to the candidates who appeared for the NEST 2021 exam on their registered email ID. Candidates can evaluate their NEST 2021 exam score by referring to the NEST 2021 Answer Key. The authority provides an option for the candidates to raise objections against the answer key in case of any discrepancies found. Candidates have to cross-check their answers with the answers provided on the NEST 2021 Answer Key. For raising an objection against the NEST 2021 Answer Key, candidates have to provide their NEST Roll number along with the question ID. The final answer key was released on Aug 30, 2021, by the conduction authority after taking into consideration all the objections submitted by the candidates. The final answer key was sent to the registered email of the respective candidates.
NEST 2021 Answer Key Dates
The authorities have updated the NEST 2021 answer key release date and last date to fill the objections on the official website. The candidates can check the below table for the important dates.
| Events | Dates |
| NEST Exam Date | Aug 14, 2021 |
| NEST Answer Key Release | Aug 21, 2021 |
| NEST 2021 Objection Raise Date | Aug 28, 2021 (8AM) |
| NEST 2021 Final Answer Key Release | Aug 30, 2021 |
| NEST Result Date | Sep 1, 2021 |
How to Check the NEST 2021 Answer Key?
The NEST exam answer scripts and answer keys have been sent to the candidates who took the test on their registered email addresses. The candidates must follow the steps below to check the NEST exam answer keys and scripts for session 2021.
- Step 1: Open the email received from the NEST email address.
- Step 2: Click on the link available in the mail body.
- Step 3: Enter the Username/ID and password in the login window.
- Step 4: Click on the ‘Login’ button.
- Step 5: Candidates can download the answer key that will open on their screen.
Things to Check in NEST 2021 Answer Key
The candidates must cross-check the below-listed things in their respective answer keys and reach out to the respective authorities immediately if any discrepancy is found.
- Question Numbers
- Question Set
- Correct and Incorrect Answers
- Highlighted revised answers ( in the revised answer keys )
- All the sections ( General, Chemistry, Biology, Maths, and Physics).
NEST 2021 Answer key Marking Scheme
The NEST 2021 Answer key marking scheme is depicted below in the tabular format. The candidates can calculate their estimated marks as per the marking scheme prescribed by the authorities.
| Sections | Each Correct Answers | Each Incorrect Answer | Negative Marking |
| Physics | +3 | -1 | Applicable |
| General | +3 | 0 | NA |
| Chemistry | +3 | -1 | Applicable |
| Maths | +3 | -1 | Applicable |
| Biology | +3 | -1 | Applicable |
How to Challenge NEST 2021 Answerkey?
The candidates who want to challenge the NEST 2021 answer key can do it by sending the requests by 23 Aug 2021 till 8 am. The candidates will need to send their queries or requests to the four email addresses given by authorities available in the PDF provided below. The question paper authority will consider all the requests and discuss them with the committee. The authorities will not individually communicate the changes in the answer key to the candidates who raised the queries, but it will be announced to all the candidates. The authorities wil release the revised answer key on the official website. For more information, download the PDF provided below for the official instructions for raising the queries about NEST 2021 answer key answer scripts.
Click here to download the Instructions for challenging the NEST 2021 Answerkey.
Previous Years’ Answer Keys for NEST
The candidates planning to appear for the NEST exam can download the previous years’ answer keys to prepare for the exam. A list of previous years’ question papers are given below. Click on the link provided to download the previous years’ question papers and answer keys.
| NEST Answer Keys | Downlaod Link |
| NEST Exam 2015 Answer Key | Click Here |
| NEST Exam 2016 Answer Key | Click Here |
| NEST Exam 2017 Answer Key | Click Here |
| NEST Exam 2018 Answer Key | Click Here |
| NEST Exam 2019 Answer Key(session 1) | Click Here |
| NEST Exam 2019 Answer Key(session 2) | Click Here |
| NEST Exam 2020 Answer Key(session 1) | Click Here |
| NEST Exam 2020 Answer Key(session 2) | Click Here |
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