NSEC 2026 exam guide

What is NSEC?

The National Standard Examination in Chemistry is the first stage of India’s Chemistry Olympiad selection programme. IAPT conducts the first-stage examinations with the relevant teacher associations, including the Association of Chemistry Teachers for chemistry. HBCSE organises later stages.

Date and duration

Sunday, 22 November 2026, 11:30 am–1:30 pm IST. The examination lasts two hours. Check your admit card and official notices for centre-specific instructions.

Question pattern and marking

In the multiple-correct section, selecting even one incorrect option or missing one correct option earns no marks. Treat every option as a separate claim that needs a reason.

What level should you expect?

The content broadly follows senior-secondary chemistry, but the reasoning can be unfamiliar. You may need to connect chapters, interpret a graph or experiment, or combine several calculations. Familiarity with a formula is only the starting point.

Use the actual past papers as the difficulty benchmark. The foundation mock on this site teaches the format and broad coverage; it is not a prediction of the official paper’s difficulty.

The chemistry pathway

1. NSEC: first-stage selection examination.
2. INChO: Indian National Chemistry Olympiad.
3. Orientation-cum-Selection Camp: training and further selection.
4. Pre-departure training for the selected team.
5. International Chemistry Olympiad.

HBCSE currently lists INChO for 30 January 2027, 1:30–4:30 pm. Selected students must complete the separate required INO registration.

Exam-day preparation

• Read the current admit-card instructions and organise the required identity documents.
• Practise transferring answers carefully and checking the question number.
• Confirm permitted materials from the current instructions. Do not assume calculator rules from an older paper automatically apply.
• Plan two passes through the paper, leaving time to review marked answers.