Past papers
CSIR NET — Reading previous papers properly
The gap between reading a syllabus topic and answering a Part C question on it is large. Part C questions typically combine two or three concepts, require a derivation or a multi-step calculation, and cannot be answered by recognition. Working past Part C questions is the only realistic way to calibrate how deeply you need to know each topic — and it usually reveals that the required depth is greater than a syllabus reading suggests.
How to work the papers
- Attempt full papers under three hours with the real selection rules. Choosing which questions to attempt is part of what you are practising.
- Separate your Part B and Part C accuracy. Strong Part B with weak Part C means you know the subject but cannot yet apply it, and that needs problem practice rather than revision.
- Build a topic frequency table for Parts B and C. Across several years in your subject. The emphasis is uneven.
- Track your guessing outcomes under the real deduction. The rate varies by part; your threshold should too.
What Part C questions typically ask you to do
- Apply a principle to an unfamiliar system — the principle is on your syllabus; the system is not. The work is recognising which principle governs a situation you have not met.
- Interpret data or a result — given an experimental outcome, a graph or a set of values, determine what it implies. Recall alone does not produce the answer.
- Combine two areas of the syllabus — questions frequently sit at the join between topics that are taught separately, which is why topic-by-topic revision leaves candidates unprepared for them.
- Work through a derivation or calculation — often one you have not memorised, requiring you to reconstruct it rather than retrieve it.
That list explains why revision alone does not prepare a candidate for this examination. Every item on it is a doing task rather than a knowing task, and the only way to build them is to solve — problems from past papers, problems from your postgraduate coursework, problems from any source demanding enough to require construction rather than recall. Candidates who revise thoroughly and solve occasionally score well in Part B and lose the examination in Part C.
Attempt past papers under the real selection rules, not simply as question sets. Because only a specified number of questions in each part are evaluated, the paper is partly a test of choosing — and practising without that constraint removes the decision entirely. Track separately whether the questions you selected were the right ones, by reviewing afterwards whether the ones you skipped were genuinely harder or merely less familiar.
Build the topic frequency table for Parts B and C separately
A topic can be heavily represented in Part B and rarely in Part C, or the reverse. Counting them together produces an average that misdirects your preparation, because the two parts reward completely different work on the same material — coverage for one, problem-solving depth for the other.
