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Paper Code 51 study hub

NSEJS 2021-22 question paper, solutions & analysis.

Attempt the complete NSEJS 2021-22 question paper, check the final key and worked solutions, and use the chapter-wise concept map to decide what to revise next. The final key marks Question 18 as dropped, while Question 17 accepts either option B or D.

Three-part preparation set

Open the NSEJS 2021-22 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 2021-22 question paper

A clean student practice copy of Paper Code 51, with all 33 questions and a rough-work page.

  • 10-page PDF
  • Sections A-1 and A-2
  • Designed for timed practice
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Detailed solutions

Use the final key and worked reasoning for every scored question, with Question 18 clearly recorded as dropped and Question 17 accepting either option B or D.

  • 9-page PDF
  • Answers for Questions 1-33
  • Question 18 identified as dropped
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Chapter & concept analysis

See the main chapter, technical idea, question skill and revision target behind each question.

  • 13-page PDF
  • Biology, Chemistry and Physics
  • Includes an error-review sheet
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Practice resources prepared by Mathiit

Paper structure

Know the format before you start.

Use a 75-minute timer and attempt all 33 questions in one sitting. When scoring, exclude Question 18 because the final key marks it as dropped.

Biology · 11Q1-8 and Q25-27
Chemistry · 11Q9-16 and Q28-30
Physics · 11Q17-24 and Q31-33
Section A-1Questions 1-24. One correct option out of four; +3 for a correct answer and -1 for a wrong answer.
Section A-2Questions 25-33. One, two, three or four options may be correct; 6 marks are awarded only when all correct options and no incorrect option are selected, with no negative marking.
Total33 questions · 126 listed maximum marks · 75 minutes; Question 18 is dropped in the final key.
Recommended workflow

Turn one paper into four study sessions.

01 · ATTEMPT

Simulate the exam

Use 75 minutes, no notes and one final answer sheet.

02 · CHECK

Score carefully

Use the final key, exclude Question 18, and separate single-correct from multiple-correct items.

03 · UNDERSTAND

Read the solutions

For every miss, identify the idea or calculation that changed the answer.

04 · REVISE

Use the analysis

Record the weak chapter, revise it and reattempt the question after seven days.

Quick answers

NSEJS 2021-22 paper FAQs.

How many questions are in the NSEJS 2021-22 paper?

Paper Code 51 contains 33 questions: 24 single-correct questions in Section A-1 and 9 multiple-correct questions in Section A-2.

What are the marks and duration?

The paper lists 126 maximum marks and a duration of 75 minutes.

Are detailed solutions included?

Yes. The solution booklet includes the final key and worked reasoning, with Question 18 recorded as dropped and not scored; Question 17 accepts either option B or D.

Is a chapter-wise analysis available?

Yes. The analysis maps every question to its subject, chapter, key concept and skill to revise.

How are Biology, Chemistry and Physics distributed in the NSEJS 2021-22 paper?

Paper Code 51 has 11 Biology, 11 Chemistry and 11 Physics questions, so all three 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 25-33 with one or more correct options; every option should be checked independently.

Is there negative marking in the NSEJS 2021-22 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 2021-22 final key?

Yes. Question 18 is marked dropped in the final key. Keep it for chapter practice but exclude it from the score.

How should I use the NSEJS 2021-22 paper as a timed mock?

Attempt all 33 questions in one 75-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.

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