NSO Answer Key 2025: Download OMR Sheet Here

Exam On - 13 Nov '25

Updated on Feb 3, 2025 14:00 IST

By Salviya Antony, Senior Executive - Content

SOF NSO Answer Key 2024: The Science Olympiad Foundation (SOF) released SOF NSO Answer Key 2024 for all the sets on the official NSO website for Stage 1 in December 2024. Students must check the answer keys and calculate their expected scores. Students who get the minimum qualifying marks will be eligible to appear for NSO 2025 exam level 2. NSO 2025 answer key for level 2 will be released within 2 weeks after the exam.

Direct link to Download NSO SOF answer key 2024-25

NSO is an annual scholarship exam that aims at cultivating scientific reasoning and logical ability among school students. Every year, around 10 lakh students register for NSO. It is conducted at two levels.

Table of content

NSO Answer Key 2024: Related Dates
NSO 2025 Exam Dates & Schedule
NSO Answer Key 2024: Steps to Download
How to Calculate Scores with NSO Answer Key 2024?
NSO 2024 Marking Scheme

NSO Answer Key 2024: Related Dates

Event	Dates
NSO exam dates 2024	October 18, November 12, and December 3, 2024
Release of NSO Result Level 1	January 2025*
NSO 2024-25 Exam Date for Level 2	February 2025*
NSO Answer Key 2024-25 for Level 2	February/March 2025*
NSO Result Date for Level 2	March 2025*

NSO 2025 Exam Dates & Schedule

Take a look at the table below for the complete schedule of NSO 2025 exam

Dates	Upcoming Exam Dates
Jan ' 26	Release of NSO Result 2025-26 Level 1 TENTATIVE

NSO Answer Key 2024: Steps to Download

Open official website - sofworld.org/nso
Click on 'View all updates'
Click on the SOF NSO ANSWER KEYS class-wise links
The NSO answer key will appear on your screen
Check the answers with those marked by the candidate
Calculate score

View answer key

How to Calculate Scores with NSO Answer Key 2024?

Students have to follow the given marking scheme to calculate scores with the NSO 2024 answer key

Add marks for each correct answer
There will be no negative deduction

NSO 2024 Marking Scheme

Class	Topic/Section	Number of sections	Marks per question	Total Marks
1 to 4	Logical Reasoning	5	1	5
	Science	25	1	25
	Achievers Section	5	2	10
	GRAND TOTAL	35		40
5 to 10	Logical Reasoning	10	1	10
	Science	35	1	35
	Achievers Section	5	3	15
	GRAND TOTAL	50		60
11 and 12	Physics & Chemistry	25	1	25
	Achievers Section	5	3	15
	Mathematics/Biology	20	1	20
	GRAND TOTAL	50		60

SOF NSO Result 2024

The SOF NSO 2024 result for level 1 was declared in January 2025. Science Olympiad Foundation (SOF) will also send the National Science Olympiad result 2024 to the students' respective schools. The NSO Result 2024 will comprise a participation certificate along with the Student Performance Report (SPR) for each participating student. SPR contains a detailed analysis of the performance in different sections of the exam. Class Toppers are awarded Gold, Silver and Bronze medals. The results will also be made available online. NSO result 2025 for level 2 is expected to be released in March/April 2025.