NSEC 2025 Question Paper, Download and Solution PDF

NSEC 2025 Question Paper: The NSEC (National Standard Examination in Chemistry) is a national-level chemistry Olympiad for students in Class 12 or below in India, featuring a mix of objective-type questions from the Class 11 and 12 CBSE curriculum. The 2025 exam is scheduled for November 23, 2025, and will include questions covering Physical Chemistry, Inorganic Chemistry, and Organic Chemistry.​

You can get the NSEC 2025 question paper PDF below, and is also available at the official IAPT site. These papers are valuable for practice and understanding the exam format. The 2025 question paper will be released online after the exam is conducted.

Also Read: 

• NSEC Answer Key 2025

NSEC 2025 Question Paper Overview

The National Standard Examination in Chemistry (NSEC) is conducted by IAPT and acts as Stage 1 of the Chemistry Olympiad pathway in India. Students who clear NSEC qualify for INChO, leading further to OCSC and international stages.

NSEC 2025 Question Paper PDF Download

Students aiming for INChO can download the NSEC 2025 question paper here.

Why Solving the NSEC 2025 Question Paper is Important

1. Helps Understand Olympiad-Level Chemistry Syllabus

The NSEC exam focuses on conceptual chemistry, including numericals, multi-step reasoning, and applied problem-solving.

2. Improved Speed & Accuracy

Timed practice of NSEC papers strengthens calculation methods and logical reasoning.

3. Better Conceptual Retention

Topics like thermodynamics, organic mechanism sequencing, equilibrium, and physical chemistry require repeated exposure.

4. Helps Identify Weak Areas

Solving full-length papers highlights gaps in chapters like electrochemistry, stoichiometry, atomic structure, and kinetics.

5. Boosts Confidence for INChO

Solving model and previous-year NSEC question papers simulates the actual exam environment.

Topics Covered in NSEC 2025 Question Paper

The exam usually includes a balanced mix of:

• Organic Chemistry (reaction mechanism, stereochemistry, GOC)

• Physical Chemistry (thermo, equilibrium, kinetics, electrochemistry)

• Inorganic Chemistry (coordination, chemical bonding, periodicity)

• Atomic structure & quantum concepts

• Redox processes

• Solution chemistry

• Analytical & application-based problems

These topics form the backbone of the NSEC + INChO syllabus.

NSEC 2025 Question Paper Pattern

The structure closely follows the Olympiad model:

Part 1 – 48 MCQs (Single Correct Answer)

• +3 for correct

• −1 for incorrect

Part 2 – 12 MCQs (Multiple Correct Answer)

• +3 for fully correct response

• −1 for any incorrect attempt

Total Marks: 216

The paper demands conceptual clarity rather than formula memorisation.