NSEJS 2020-21 question paper, solutions & analysis.
Attempt the complete IOQJS 2020-21 Part I (NSEJS) question paper, including its Science and Mathematics sections, check the final key and worked solutions, and use the chapter-wise concept map to decide what to revise next. The final key drops Questions 11 and 12; Question 9 accepts A or B, while Question 26 accepts either of two response sets.
Open the NSEJS 2020-21 paper, solutions and analysis.
Each resource opens as a separate PDF in a new browser tab, so you can keep this guide open while attempting and reviewing the paper.
NSEJS 2020-21 question paper
A clean student practice copy of Paper Code 51, with all 32 questions and a rough-work page.
- 10-page PDF
- Sections A-1 and A-2
- Designed for timed practice
Detailed solutions
Use the final key and worked reasoning for every scored question, with Questions 11 and 12 clearly recorded as dropped, Question 9 accepting A or B, and Question 26 accepting either of two response sets.
- 10-page PDF
- Answers for Questions 1-32
- Questions 11 and 12 identified as dropped
Chapter & concept analysis
See the main chapter, technical idea, question skill and revision target behind each question.
- 12-page PDF
- Physics, Chemistry, Biology and Mathematics
- Includes an error-review sheet
Practice resources prepared by Mathiit
Know the format before you start.
Use a 60-minute timer and attempt all 32 questions in one sitting. When scoring, exclude Questions 11 and 12 because the final key marks them as dropped.
Turn one paper into four study sessions.
Simulate the exam
Use 60 minutes, no notes and one final answer sheet.
Score carefully
Use the final key, exclude Questions 11 and 12, and separate single-correct from multiple-correct items.
Read the solutions
For every miss, identify the idea or calculation that changed the answer.
Use the analysis
Record the weak chapter, revise it and reattempt the question after seven days.
NSEJS 2020-21 paper FAQs.
How many questions are in the NSEJS 2020-21 paper?
Paper Code 51 contains 32 questions: 24 single-correct questions in Section A-1 and 8 multiple-correct questions in Section A-2.
What are the marks and duration?
The paper lists 120 maximum marks and a duration of 60 minutes.
Are detailed solutions included?
Yes. The solution booklet includes the final key and worked reasoning, with Questions 11 and 12 recorded as dropped and not scored; Question 9 accepts A or B, and Question 26 accepts either of two response sets.
Is a chapter-wise analysis available?
Yes. The analysis maps every question to its subject, chapter, key concept and skill to revise.
How are Physics, Chemistry, Biology and Mathematics distributed in the NSEJS 2020-21 paper?
Paper Code 51 has 8 Physics, 8 Chemistry, 8 Biology and 8 Mathematics questions, so all four subjects carry equal question weight.
What is the difference between Section A-1 and Section A-2?
Section A-1 contains Questions 1-24 with one correct option. Section A-2 contains Questions 25-32 with one or more correct options; every option should be checked independently.
Is there negative marking in the NSEJS 2020-21 paper?
Section A-1 awards +3 for a correct answer and applies a -1 penalty for a wrong answer. Section A-2 awards 6 marks only when all correct options and no incorrect option are marked; there is no negative marking in Section A-2.
Were any questions dropped from the NSEJS 2020-21 final key?
Yes. Questions 11 and 12 are marked dropped in the final key. Keep them for chapter practice but exclude them from the score.
How should I use the NSEJS 2020-21 paper as a timed mock?
Attempt all 32 questions in one 60-minute sitting without notes. Then check the answer key, read the solutions, classify each mistake and revise the weakest chapters before reattempting.
Can Class 7, 8 and 9 students use this paper analysis?
Yes. Class 7 students can build vocabulary and diagram skills, Class 8 students can connect concepts and practise short calculations, and Class 9 students can use the full paper for timed Olympiad preparation.
Continue with another NSEJS paper.
Return to the year-wise archive when you are ready for the next timed attempt.
NSEJS.com is not the official IAPT examination website. The latest official notice always takes priority.